NEET UG 2021 · Code O1

NEET 2021 paper, question by question

All 200 questions from the NEET UG 2021 paper, tagged to chapter, topic and idea. How hard it was, what it asked, what was new and what came back.

← NEET 2020 NEET 2022 →

Questions: 200; 200 printed, 180 answered
Chapters asked: 83; 8 usual chapters skipped
Easy / hard: 59% / 3%; share of the paper
Need a calculation: 21%; Physics alone: 58%
New ideas: 86%; of questions tested an idea not asked before
Use a figure: 10%; 10 in Physics, 9 in Chemistry
From Class 12: 55%; of the questions, all subjects
Same idea as last year: 3.5%; 7 questions

Key findings · NEET 2021

1
59% of questions were easy, 5 points above the ten-year average of 54%.
2
About 42 questions (21%) needed a calculation, against 21% on average; Physics alone was 58% calculation.
3
Biotechnology and its Applications got the biggest boost: 6 questions against a usual 2.3, followed by Strategies for Enhancement in Food Production (4 vs 1.0).
4
Physics tilted to Class 12: 32 of 50 questions (Class 12 share the highest in ten years).
5
86% of tagged questions tested an idea no earlier paper had asked, yet 99% came from a topic seen before.

Subjects

How the 2021 paper split

Questions per subject, the Class 11 and Class 12 balance, and how hard each part was.

Physics

25% of the paper

50questions · 22 chapters

Class 11 and 12

1832

Class 11
Class 12

Difficulty

1829

Easy
Medium
Hard

New ideas: 41 (82%)
Use a figure: 10
Calculation: 58%
Application: 12%
Figure-based: 12%

Chemistry

25% of the paper

50questions · 27 chapters

Class 11 and 12

2129

Class 11
Class 12

Difficulty

3019

Easy
Medium
Hard

New ideas: 48 (96%)
Use a figure: 9
Recall: 44%
Calculation: 22%
Application: 12%

Biology

50% of the paper

100questions · 34 chapters

Botany and Zoology

5050

Botany
Zoology

Class 11 and 12

5248

Class 11
Class 12

Difficulty

6929

Easy
Medium
Hard

New ideas: 83 (83%)
Use a figure: 1
Recall: 59%
Concept: 18%
Match the lists: 17%

Compared

Versus 2020 and the ten-year average

Each measure for this paper, next to the year before and the average of all ten papers. Changes are in percentage points.

Questions in the paper200
2020: 180 +20Avg: 188 +13
Chapters asked83
2020: 89 -6Avg: 84 -1
Easy questions58.5%
2020: 66.7% -8.2Avg: 54.0% +4.5
Hard questions3.0%
2020: 0.0% +3.0Avg: 2.7% 0.3
Need a calculation21.0%
2020: 21.7% -0.7Avg: 21.2% -0.2
Straight recall52.5%
2020: 54.4% -1.9Avg: 46.3% +6.2
Use a figure10.0%
2020: 4.4% +5.6Avg: 10.5% -0.5
Statements, assertion–reason, match13.5%
2020: 10.0% +3.5Avg: 14.5% -1.0
Test a new idea86.0%
2020: 83.9% +2.1Avg: 73.9% +12.1
Same idea as the year before3.5%
2020: 6.1% -2.6Avg: 6.8% -3.3
From Class 1254.5%
2020: 52.8% +1.7Avg: 51.9% +2.6
Physics: easy36.0%
2020: 80.0% -44.0Avg: 47.0% -11.0
Chemistry: easy60.0%
2020: 60.0% 0.0Avg: 46.6% +13.4
Biology: easy69.0%
2020: 63.3% +5.7Avg: 61.0% +8.0

Measure	2021	2020	Change	Ten-year avg	Vs avg
Questions in the paper	200	180	+20	188	+13
Chapters asked	83	89	-6	84	-1
Easy questions	58.5%	66.7%	-8.2	54.0%	+4.5
Hard questions	3.0%	0.0%	+3.0	2.7%	0.3
Need a calculation	21.0%	21.7%	-0.7	21.2%	-0.2
Straight recall	52.5%	54.4%	-1.9	46.3%	+6.2
Use a figure	10.0%	4.4%	+5.6	10.5%	-0.5
Statements, assertion–reason, match	13.5%	10.0%	+3.5	14.5%	-1.0
Test a new idea	86.0%	83.9%	+2.1	73.9%	+12.1
Same idea as the year before	3.5%	6.1%	-2.6	6.8%	-3.3
From Class 12	54.5%	52.8%	+1.7	51.9%	+2.6
Physics: easy	36.0%	80.0%	-44.0	47.0%	-11.0
Chemistry: easy	60.0%	60.0%	0.0	46.6%	+13.4
Biology: easy	69.0%	63.3%	+5.7	61.0%	+8.0

Repetition

What came back, and what was new

Almost every question sits in a chapter NEET has asked before, and most in a known topic. The exact idea is a different story: most are new.

Questions whose … had appeared before

ANY PAPER 2017–2020

Chapter100%
Topic99%
Exact idea14%
Exact idea, in 20204%

Topic and idea shares count only the questions we could tag to a topic. The ten-paper window grows each year, so early years look newer than they are.

Questions testing a new idea, by year

Share of each paper whose idea had never been asked in an earlier paper.

–’17 95%’18 89%’19 84%’20 86%’21 66%’22 64%’23 59%’24 62%’25 59%’26

Same idea as the year before

Share of each paper that repeated an idea from the previous paper.

–’17 5.0%’18 5.0%’19 6.1%’20 3.5%’21 7.0%’22 7.5%’23 9.0%’24 10.6%’25 7.8%’26

Chapters

Which chapters got more, and which got less

Questions a chapter had in 2021 minus its usual: its ten-year average per 180 questions. Counts are scaled to 180 questions so years compare fairly.

More than usual

Biotechnology and its Applications · Biology+3.16 questions · usually 2.3
Strategies for Enhancement in Food Production · Biology+2.64 questions · usually 1.0
Molecular Basis of Inheritance · Biology+2.39 questions · usually 5.8
Plant Kingdom · Biology+1.55 questions · usually 3.0
Moving Charges and Magnetism · Physics+1.54 questions · usually 2.1
Cell Cycle and Cell Division · Biology+1.55 questions · usually 3.0
Nuclei · Physics+1.53 questions · usually 1.2
Electrostatic Potential and Capacitance · Physics+1.44 questions · usually 2.2
Alternating Current · Physics+1.33 questions · usually 1.4
Motion in a Plane · Physics+1.22 questions · usually 0.6

Less than usual, or skipped

Principles of Inheritance and Variation · Biology−2.32 questions · usually 4.1
Human Health and Disease · Biology−2.31 question · usually 3.2
Biodiversity and Conservation · Biology−2.1Not asked · usually 2.1
Biological Classification · Biology−1.61 question · usually 2.5
Equilibrium · Chemistry−1.61 question · usually 2.5
Excretory Products and their Elimination · Biology−1.5Not asked · usually 1.5
Neural Control and Coordination · Biology−1.5Not asked · usually 1.5
Wave Optics · Physics−1.5Not asked · usually 1.5
Alcohols, Phenols and Ethers · Chemistry−1.4Not asked · usually 1.4
Chemical Coordination and Integration · Biology−1.41 question · usually 2.3

All 83 chapters asked

Physics · 22

Chemistry · 27

Biology · 34

Topics

Busiest topics in 2021

Gene TherapyBiotechnology and its Applications · 8 in ten years5
CapacitanceElectrostatic Potential and Capacitance · 14 in ten years4
Aldehydes, Ketones and Carboxylic AcidsAldehydes, Ketones and Carboxylic Acids · 22 in ten years4
Plant and Animal BreedingStrategies for Enhancement in Food Production · 11 in ten years4
Biomolecule StructureBiomolecules · 33 in ten years4
Mitotic DivisionCell Cycle and Cell Division · 21 in ten years4
Animal Kingdom: Basis of Classification and Non-chordatesAnimal Kingdom · 18 in ten years4
Ohm's Law and ResistanceCurrent Electricity · 28 in ten years3
Units and DimensionsUnits and Measurements · 20 in ten years3
LCR CircuitsAlternating Current · 15 in ten years3
p-Block Elements (Groups 15-18)The p-Block Elements (Class 12) · 23 in ten years3
Restriction EnzymesBiotechnology: Principles and Processes · 22 in ten years3

Question format

SHARE OF 2021

One-line MCQ · 129 Q65%
Numerical · 28 Q14%
Match the lists · 23 Q12%
Figure-based · 9 Q5%
Other · 7 Q4%
Two statements · 3 Q2%
Assertion–reason · 1 Q1%

What the question tests

SHARE OF 2021

Recall · 105 Q53%
Concept · 29 Q14%
Calculation · 28 Q14%
Application · 18 Q9%
Multi-step · 15 Q8%
Data or graph · 4 Q2%
Figure reading · 1 Q1%

Drill down

What 2021 asked, and its history

Every chapter the 2021 paper asked, with all its topics and ideas. Counts and squares cover all ten papers; rows 2021 did not ask are faded, and questions from other years link to their own paper.

subjectAskedShareYears’17’18’19’20’21’22’23’24’25’26

Open100 this paper940 · 50%50%10/10909090901001001001009090
Open50 this paper469 · 25%25%10/1045454545504950504545
Open50 this paper466 · 25%25%10/1043454545505049504544

Squares are the ten papers, 2017 to 2026; darker means more questions. Share is of the level above.

Every question

All 200 questions of NEET 2021

The opening words of each question as printed, with its chapter, topic and how hard it was. “New idea” means no earlier paper had tested it.

Subject

Difficulty

Idea

Find

200 of 200 questions

Physics50 questions

18 easy29 medium3 hard

Q1
A radioactive nucleus $\mathrm{^{A}_{Z}X}$ undergoes spontaneous decay in the sequence…
Nuclei Radioactive DecayAlpha Emission Z and A Changes
MediumOne-line MCQNew idea
Q2
Polar molecules are the molecules :
Electric Charges and Fields Coulomb's LawPolar and Non-Polar Molecules
EasyOne-line MCQNew idea
Q3
The effective resistance of a parallel connection that consists of four wires of equal length, equal area of cross-section and same…
Current Electricity Ohm's Law and ResistanceSeries Resistors and Voltage Divider
EasyNumericalNew ideaIdea asked in 3 papers
Q4
Column - I gives certain physical terms associated with flow of current through a metallic conductor. Column - II gives some mathematical…
Current Electricity Ohm's Law and ResistanceMicroscopic Model of Resistivity
MediumMatch the listsNew idea
Q5
The equivalent capacitance of the combination shown in the figure is :
Electrostatic Potential and Capacitance CapacitanceCapacitors in Parallel
EasyFigure-basedNew idea
Q6
In a potentiometer circuit a cell of EMF 1.5 V gives balance point at 36 cm length of wire. If another cell of EMF 2.5 V replaces the…
Current Electricity Kirchhoff's RulesComparing EMFs via Potentiometer
EasyNumericalNew idea
Q7
The escape velocity from the Earth's surface is $v$ . The escape velocity from the surface of another planet having a radius, four times…
GravitationEscape Velocity
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q8
A cup of coffee cools from 90°C to 80°C in t minutes, when the room temperature is 20°C. The time taken by a similar cup of coffee to cool…
Thermal Properties of Matter CalorimetryRadiation Correction in Calorimetry
MediumNumericalNew idea
Q9
A capacitor of capacitance 'C', is connected across an ac source of voltage V, given by $V = V_0 \sin\omega t$ The displacement current…
Electromagnetic WavesDisplacement Current
MediumOne-line MCQIdea asked in 5 papers
Q10
A small block slides down on a smooth inclined plane, starting from rest at time t = 0. Let $S_n$ be the distance travelled by the block…
Motion in a Straight Line Kinematics in 1DDisplacement in the nth Second
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q11
If force [F], acceleration [A] and time [T] are chosen as the fundamental physical quantities. Find the dimensions of energy.
Units and Measurements Units and DimensionsDimensional Formulas
MediumOne-line MCQNew idea
Q12
For a plane electromagnetic wave propagating in $x$ -direction, which one of the following combination gives the correct possible…
Electromagnetic WavesTransverse Nature and E x B Direction
MediumOne-line MCQIdea asked in 3 papers
Q13
A spring is stretched by 5 cm by a force 10 N. The time period of the oscillations when a mass of 2 kg is suspended by it is :
Oscillations Simple Harmonic MotionHorizontal Spring-Mass Time Period
EasyNumericalNew idea
Q14
A particle is released from height S from the surface of the Earth. At a certain height its kinetic energy is three times its potential…
Work, Energy and Power Work-Energy TheoremConservation of Mechanical Energy
MediumOne-line MCQNew idea
Q15
A lens of large focal length and large aperture is best suited as an objective of an astronomical telescope since :
Ray Optics and Optical Instruments Prisms, Dispersion and Optical InstrumentsAstronomical Telescope
MediumOne-line MCQIdea asked in 3 papers
Q16
Two charged spherical conductors of radius $R_1$ and $R_2$ are connected by a wire. Then the ratio of surface charge densities of the…
Electrostatic Potential and Capacitance CapacitanceCommon Potential in Charge Sharing
MediumOne-line MCQNew idea
Q17
A convex lens 'A' of focal length 20 cm and a concave lens 'B' of focal length 5 cm are kept along the same axis with a distance 'd'…
Ray Optics and Optical Instruments Thin Lens FormulaCombination of Lenses Separated by a Distance
MediumNumericalNew ideaIdea asked in 2 papers
Q18
An infinitely long straight conductor carries a current of 5 A as shown. An electron is moving with a speed of $10^{5}$ m/s parallel to…
Moving Charges and Magnetism Ampere's Circuital LawForce on Charge Moving Parallel to Wire
MediumNumerical · figureNew idea
Q19
If E and G respectively denote energy and gravitational constant, then $\frac{E}{G}$ has the dimensions of :
Units and Measurements Units and DimensionsDimensions of Universal Constants
MediumOne-line MCQIdea asked in 2 papers
Q20
The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerine becomes constant after some time.…
Mechanical Properties of Fluids Fluid ViscosityTerminal Velocity Calculation
MediumOne-line MCQNew idea
Q21
The electron concentration in an n-type semiconductor is the same as hole concentration in a p-type semiconductor. An external field…
Semiconductor Electronics: Materials, Devices and Simple Circuits Semiconductor DevicesIntrinsic and Extrinsic Semiconductors
MediumOne-line MCQIdea asked in 2 papers
Q22
A thick current carrying cable of radius 'R' carries current 'I' uniformly distributed across its cross-section. The variation of magnetic…
Moving Charges and Magnetism Ampere's Circuital LawField of Thick Conductor
MediumFigure-basedNew idea
Q23
A screw gauge gives the following readings when used to measure the diameter of a wire Main scale reading : 0 mm Circular scale reading :…
Units and Measurements Units and DimensionsScrew Gauge Measurements
EasyNumericalNew idea
Q24
The number of photons per second on an average emitted by the source of monochromatic light of wavelength 600 nm, when it delivers the…
Dual Nature of Radiation and Matter Photoelectric EffectPhoton Emission Rate from Power
EasyNumericalNew idea
Q25
Water falls from a height of 60 m at the rate of 15 kg/s to operate a turbine. The losses due to frictional force are 10% of the input…
Work, Energy and Power Work-Energy TheoremPower of a Water Pump
EasyNumericalNew idea
Q26
An electromagnetic wave of wavelength ' $\lambda$ ' is incident on a photosensitive surface of negligible work function. If 'm' mass is of…
Dual Nature of Radiation and Matter Photoelectric EffectDe Broglie Wavelength of Emitted Photoelectron
MediumOne-line MCQNew idea
Q27
Match Column - I and Column - II and choose the correct match from the given choices. Column - I | Column - II (A) Root mean square speed…
Kinetic Theory Kinetic Theory of GasesDegrees of Freedom and Internal Energy
EasyMatch the listsIdea asked in 3 papers
Q28
A nucleus with mass number 240 breaks into two fragments each of mass number 120, the binding energy per nucleon of unfragmented nuclei is…
Nuclei Nuclear Binding EnergyBinding Energy per Nucleon
EasyNumericalNew idea
Q29
A parallel plate capacitor has a uniform electric field ' $\vec{E}$ ' in the space between the plates. If the distance between the plates is…
Electrostatic Potential and Capacitance CapacitanceElectrostatic Energy Density
EasyOne-line MCQNew idea
Q30
Find the value of the angle of emergence from the prism. Refractive index of the glass is $\sqrt{3}$ .
Ray Optics and Optical Instruments Snell's LawSnell's Law Calculation
MediumFigure-basedIdea asked in 2 papers
Q31
A dipole is placed in an electric field as shown. In which direction will it move ?
Electric Charges and Fields Coulomb's LawForce Between Dipole and Point Charge
MediumFigure-basedNew idea
Q32
Consider the following statements (A) and (B) and identify the correct answer. (A) A zener diode is connected in reverse bias, when used…
Semiconductor Electronics: Materials, Devices and Simple Circuits Semiconductor DevicesZener Diode as Voltage Regulator
EasyOtherNew ideaIdea asked in 2 papers
Q33
The half-life of a radioactive nuclide is 100 hours. The fraction of original activity that will remain after 150 hours would be :
Nuclei Radioactive DecayFraction Remaining After n Half-lives
EasyNumericalNew idea
Q34
An inductor of inductance L, a capacitor of capacitance C and a resistor of resistance 'R' are connected in series to an ac source of…
Alternating Current LCR CircuitsImpedance Triangle Applications
EasyNumerical · figureNew idea
Q35
A body is executing simple harmonic motion with frequency 'n', the frequency of its potential energy is :
Oscillations Simple Harmonic MotionFrequency of Energy Oscillation
EasyOne-line MCQNew idea
Q36
From a circular ring of mass 'M' and radius 'R' an arc corresponding to a 90° sector is removed. The moment of inertia of the remaining…
System of Particles and Rotational Motion Rotational MotionMoment of Inertia of Standard Bodies
MediumOne-line MCQIdea asked in 3 papers
Q37
A series LCR circuit containing 5.0 H inductor, 80 $\mu$ F capacitor and 40 Ω resistor is connected to 230 V variable frequency ac source.…
Alternating Current LCR CircuitsHalf-Power Frequencies
HardNumericalNew idea
Q38
A uniform conducting wire of length 12a and resistance 'R' is wound up as a current carrying coil in the shape of, (i) an equilateral…
Moving Charges and Magnetism Magnetic Force on Charges and CurrentsMagnetic Moment of a Current Loop
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q39
A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V, 44 W lamp. Ignoring power losses in the…
Alternating Current LCR CircuitsIdeal Transformer
EasyNumericalNew ideaIdea asked in 3 papers
Q40
Twenty seven drops of same size are charged at 220 V each. They combine to form a bigger drop. Calculate the potential of the bigger drop.
Electrostatic Potential and Capacitance CapacitanceCapacitance of an Isolated Spherical Conductor
MediumNumericalNew ideaIdea asked in 2 papers
Q41
Two conducting circular loops of radii $R_1$ and $R_2$ are placed in the same plane with their centres coinciding. If $R_1 >> R_2$ , the…
Electromagnetic Induction Faraday's LawMutual Inductance of Concentric Circular Coils
MediumOne-line MCQNew idea
Q42
A particle of mass 'm' is projected with a velocity $v = kV_e$ (k < 1) from the surface of the earth. ( $V_e$ = escape velocity) The…
GravitationEscape Velocity
HardOne-line MCQNew ideaIdea asked in 2 papers
Q43
A uniform rod of length 200 cm and mass 500 g is balanced on a wedge placed at 40 cm mark. A mass of 2 kg is suspended from the rod at 20…
System of Particles and Rotational Motion Rotational MotionRotational Equilibrium
MediumNumerical · figureNew ideaIdea asked in 2 papers
Q44
A ball of mass 0.15 kg is dropped from a height 10 m, strikes the ground and rebounds to the same height. The magnitude of impulse…
Laws of Motion Newton's Laws of MotionImpulse of a Bouncing Ball
EasyNumericalNew ideaIdea asked in 2 papers
Q45
A particle moving in a circle of radius R with a uniform speed takes a time T to complete one revolution. If this particle were projected…
Motion in a Plane Projectile MotionMaximum Height
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q46
For the given circuit, the input digital signals are applied at the terminals A, B and C. What would be the output at the terminal $y$ ?
Semiconductor Electronics: Materials, Devices and Simple Circuits Logic GatesLogic Gate Waveform Analysis
MediumFigure-basedNew idea
Q47
In the product $\vec{F} = q(\vec{v}\times\vec{B})$ $= q\vec{v}\times(B\hat{i}+B\hat{j}+B_0\hat{k})$ For q = 1 and…
Moving Charges and Magnetism Magnetic Force on Charges and CurrentsMagnetic Force on a Moving Charge
MediumNumericalNew idea
Q48
A car starts from rest and accelerates at 5 m/ $s^{2}$ . At t = 4 s, a ball is dropped out of a window by a person sitting in the car. What…
Motion in a Plane Projectile MotionProjectile from Horizontally Moving Platform
MediumNumericalNew idea
Q49
Three resistors having resistances $r_1$ , $r_2$ and $r_3$ are connected as shown in the given circuit. The ratio $\frac{i_3}{i_1}$ of…
Current Electricity Ohm's Law and ResistanceParallel Resistors and Current Divider
EasyFigure-basedIdea asked in 3 papers
Q50
A point object is placed at a distance of 60 cm from a convex lens of focal length 30 cm. If a plane mirror were put perpendicular to the…
Ray Optics and Optical Instruments Thin Lens FormulaThin Lens Formula Application
HardOne-line MCQ · figureNew idea

Chemistry50 questions

30 easy19 medium1 hard

Q51
$\mathrm{BF_3}$ is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are :
Chemical Bonding and Molecular Structure HybridizationSimple Hybridization (sp, sp2, sp3)
EasyOne-line MCQNew idea
Q52
Which of the following reactions is the metal displacement reaction ? Choose the right option.
Redox ReactionsTypes of Redox Reactions
EasyOne-line MCQNew idea
Q53
The compound which shows metamerism is :
Organic Chemistry - Some Basic Principles and Techniques Purification, Analysis and Isomerism of Organic CompoundsTypes of Structural Isomerism
MediumOne-line MCQNew idea
Q54
The $\mathrm{pK_b}$ of dimethylamine and $\mathrm{pK_a}$ of acetic acid are 3.27 and 4.77 respectively at T (K). The correct option for…
Equilibrium pH and Buffer SolutionspH of Weak Acid-Weak Base Salt
EasyNumericalNew idea
Q55
The structures of beryllium chloride in solid state and vapour phase, are :
The s-Block Elements Alkaline Earth MetalsStructure of Beryllium Chloride
EasyOne-line MCQNew idea
Q56
Zr (Z = 40) and Hf (Z = 72) have similar atomic and ionic radii because of :
The d- and f-Block Elements d- and f-Block ElementsLanthanoid Contraction
EasyOne-line MCQNew idea
Q57
A particular station of All India Radio, New Delhi, broadcasts on a frequency of 1,368 kHz (kilohertz). The wavelength of the…
Structure of Atom Quantum NumbersWave Nature of Electromagnetic Radiation
EasyNumericalNew idea
Q58
An organic compound contains 78% (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this…
Some Basic Concepts of Chemistry Mole ConceptEmpirical and Molecular Formula
EasyNumericalNew ideaIdea asked in 2 papers
Q59
Ethylene diaminetetraacetate (EDTA) ion is :
Coordination CompoundsEDTA Structure and Denticity
EasyOne-line MCQNew idea
Q60
Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is :
The s-Block Elements Alkaline Earth MetalsAnomalous Behavior of Beryllium
EasyOne-line MCQNew idea
Q61
The right option for the statement “Tyndall effect is exhibited by”, is :
Surface Chemistry Surface Chemistry and ColloidsOptical and Kinetic Properties of Colloids
EasyOne-line MCQNew idea
Q62
The molar conductance of NaCl, HCl and $\mathrm{CH_3COONa}$ at infinite dilution are 126.45, 426.16 and 91.0 S $\mathrm{cm^{2}\ mol^{-1}}$ …
Electrochemistry Electrolytic Conductance and ElectrolysisKohlrausch's Law
EasyNumericalNew idea
Q63
The correct structure of 2,6-Dimethyl-dec-4-ene is :
Hydrocarbons Hydrocarbons (Alkenes)Nomenclature of Alkenes
EasyFigure-basedNew idea
Q64
The correct option for the number of body centred unit cells in all 14 types of Bravais lattice unit cells is :
The Solid StateCrystal Systems and Bravais Lattices
MediumOne-line MCQNew idea
Q65
Which one of the following polymers is prepared by addition polymerisation ?
PolymersAddition versus Condensation Polymers
EasyOne-line MCQNew idea
Q66
What is the IUPAC name of the organic compound formed in the following chemical reaction ?…
Aldehydes, Ketones and Carboxylic AcidsGrignard Addition to Carbonyls
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q67
Match List - I with List - II. List - I | List - II (a) $\mathrm{PCl_5}$ | (i) Square pyramidal (b) $\mathrm{SF_6}$ | (ii) Trigonal planar…
Chemical Bonding and Molecular Structure VSEPR TheoryMolecular Shape Prediction
EasyMatch the listsNew ideaIdea asked in 3 papers
Q68
The incorrect statement among the following is :
The d- and f-Block Elements d- and f-Block ElementsProperties of Lanthanoids and Actinoids
MediumOne-line MCQNew idea
Q69
Dihedral angle of least stable conformer of ethane is :
Hydrocarbons Hydrocarbons (Alkanes)Conformational Dihedral Angles
EasyOne-line MCQNew idea
Q70
Choose the correct option for graphical representation of Boyle's law, which shows a graph of pressure vs. volume of a gas at different…
States of Matter Ideal Gas LawIsotherm Temperature Comparison
MediumFigure-basedNew idea
Q71
The correct sequence of bond enthalpy of 'C–X' bond is :
Haloalkanes and Haloarenes Nucleophilic SubstitutionC-X Bond Enthalpy Trend
MediumOne-line MCQNew idea
Q72
Tritium, a radioactive isotope of hydrogen, emits which of the following particles ?
Hydrogen Hydrogen and WaterIsotopes of Hydrogen
EasyOne-line MCQNew idea
Q73
Statement I : Acid strength increases in the order given as HF << HCl << HBr << HI. Statement II : As the size of the elements F, Cl, Br,…
The p-Block Elements (Class 12)p-Block Elements (Groups 15-18)Trends in Groups 15 to 18
EasyTwo statementsIdea asked in 3 papers
Q74
Given below are two statements : Statement I : Aspirin and Paracetamol belong to the class of narcotic analgesics. Statement II : Morphine…
Chemistry in Everyday LifeAnalgesics and Antipyretics
EasyTwo statementsNew idea
Q75
Which one among the following is the correct option for right relationship between $C_P$ and $C_V$ for one mole of ideal gas ?
Thermodynamics First Law of ThermodynamicsHeat Capacities
EasyOne-line MCQNew idea
Q76
The maximum temperature that can be achieved in blast furnace is :
General Principles and Processes of Isolation of Elements General Principles of MetallurgyExtraction of Iron in the Blast Furnace
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q77
For a reaction A $\to$ B, enthalpy of reaction is −4.2 kJ $\mathrm{mol^{-1}}$ and enthalpy of activation is 9.6 kJ $\mathrm{mol^{-1}}$ . The…
Chemical KineticsReaction Coordinate Diagrams
MediumFigure-basedNew idea
Q78
Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature ?
General Principles and Processes of Isolation of Elements General Principles of MetallurgyRefining of Metals
EasyOne-line MCQNew idea
Q79
The RBC deficiency is deficiency disease of :
Biomolecules Biomolecules (Chemistry)Vitamin Deficiency Diseases
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q80
The major product of the following chemical reaction is : $\mathrm{(CH_3)_2CH-CH=CH_2 + HBr \xrightarrow{(C_6H_5CO)_2O_2} ?}$
Hydrocarbons Hydrocarbons (Alkenes)Peroxide Effect (Anti-Markovnikov)
EasyOne-line MCQ · figureNew idea
Q81
Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are :
The Solid StateNumber and Location of Voids
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q82
Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.
The p-Block Elements (Class 12)p-Block Elements (Groups 15-18)Noble Gases: Properties and Uses
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q83
The major product formed in dehydrohalogenation reaction of 2-Bromo pentane is Pent-2-ene. This product formation is based on ?
Haloalkanes and Haloarenes Nucleophilic SubstitutionSaytzeff Rule in Dehydrohalogenation
EasyOne-line MCQNew idea
Q84
Identify the compound that will react with Hinsberg's reagent to give a solid which dissolves in alkali.
Amines Amines and Diazonium SaltsAlkali Solubility in the Hinsberg Test
EasyOne-line MCQ · figureNew idea
Q85
The following solutions were prepared by dissolving 10 g of glucose ( $\mathrm{C_6H_{12}O_6}$ ) in 250 ml of water ( $P_1$ ), 10 g of urea…
Solutions Solutions and Colligative PropertiesOsmotic Pressure
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q86
Match List - I with List - II. List - I | List - II (a) $\mathrm{2SO_2(g) + O_2(g) \to 2SO_3(g)}$ | (i) Acid rain (b)…
Environmental ChemistryTropospheric and Stratospheric Reactions
MediumMatch the listsNew idea
Q87
The intermediate compound 'X' in the following chemical reaction is :…
Aldehydes, Ketones and Carboxylic AcidsEtard Reaction
HardOne-line MCQ · figureNew ideaIdea asked in 2 papers
Q88
Match List - I with List - II. List - I | List - II (a) Benzene $\mathrm{\xrightarrow[Anhyd.\ AlCl_3/CuCl]{CO,\ HCl}}$ | (i)…
Aldehydes, Ketones and Carboxylic AcidsGattermann-Koch and Named-Reaction Matching
MediumMatch the lists · figureNew idea
Q89
The product formed in the following chemical reaction is : [cyclohexanone with $\mathrm{-CH_2-CO-OCH_3}$ at C-2 and $\mathrm{-CH_3}$ at…
Aldehydes, Ketones and Carboxylic AcidsChemoselective Hydride Reduction
MediumOne-line MCQ · figureNew idea
Q90
Choose the correct option for the total pressure (in atm.) in a mixture of 4 g $\mathrm{O_2}$ and 2 g $\mathrm{H_2}$ confined in a total…
States of Matter Ideal Gas LawIdeal Gas Equation
EasyNumericalNew ideaIdea asked in 5 papers
Q91
The correct option for the value of vapour pressure of a solution at 45°C with benzene to octane in molar ratio 3 : 2 is : [At 45°C vapour…
Solutions Solutions and Colligative PropertiesRaoult's Law and Vapour Pressure
EasyNumericalNew idea
Q92
Which of the following molecules is non-polar in nature ?
Chemical Bonding and Molecular Structure VSEPR TheoryMolecular Polarity
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q93
The reagent 'R' in the given sequence of chemical reaction is : 2,4,6-Tribromoaniline $\mathrm{\xrightarrow{NaNO_2,\ HCl,\ 0-5^{\circ}C}}$ …
Amines Amines and Diazonium SaltsDeamination via Diazonium Reduction
MediumOne-line MCQ · figureNew idea
Q94
Match List - I with List - II. List - I | List - II (a) $\mathrm{[Fe(CN)_6]^{3-}}$ | (i) 5.92 BM (b) $\mathrm{[Fe(H_2O)_6]^{3+}}$ | (ii) 0…
Coordination Compounds Crystal Field TheorySpin-Only Magnetic Moment via CFT
MediumMatch the listsNew ideaIdea asked in 2 papers
Q95
From the following pairs of ions which one is not an iso-electronic pair ?
Structure of Atom Quantum NumbersIsoelectronic Species Configurations
EasyOne-line MCQNew idea
Q96
For irreversible expansion of an ideal gas under isothermal condition, the correct option is :
Thermodynamics Gibbs Free EnergyEntropy of Isothermal Gas Expansion
MediumOne-line MCQNew idea
Q97
The molar conductivity of 0.007 M acetic acid is 20 S $\mathrm{cm^{2}\ mol^{-1}}$ . What is the dissociation constant of acetic acid ?…
Electrochemistry Electrolytic Conductance and ElectrolysisDegree of Dissociation from Conductivity
MediumNumericalNew ideaIdea asked in 2 papers
Q98
The slope of Arrhenius Plot $\left(\ln k \text{ v/s } \frac{1}{T}\right)$ of first order reaction is $-5\times10^{3}$ K. The value of…
Chemical KineticsArrhenius Plot Interpretation
EasyNumericalNew ideaIdea asked in 3 papers
Q99
$\mathrm{CH_3CH_2COO^{-}Na^{+} \xrightarrow[Heat]{NaOH,\ +\ ?} CH_3CH_3 + Na_2CO_3}$ . Consider the above reaction and identify the missing…
Hydrocarbons Hydrocarbons (Alkanes)Soda Lime Decarboxylation
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q100
In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it ?
The p-Block Elements (Class 12)p-Block Elements (Groups 15-18)Trends in Groups 15 to 18
MediumOne-line MCQIdea asked in 3 papers

Botany50 questions

35 easy13 medium2 hard

Q101
During the purification process for recombinant DNA technology, addition of chilled ethanol precipitates out :
Biotechnology: Principles and Processes Restriction EnzymesDNA Precipitation with Chilled Ethanol
EasyOne-line MCQIdea asked in 3 papers
Q102
A typical angiosperm embryo sac at maturity is :
Sexual Reproduction in Flowering Plants Anther, Ovule and Embryo Sac DevelopmentStructure of the Mature Embryo Sac
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q103
Which of the following is an incorrect statement ?
Cell: The Unit of Life Nuclear OrganizationAnucleate Cells in Eukaryotes
MediumOne-line MCQNew idea
Q104
The plant hormone used to destroy weeds in a field is :
Plant Growth and Development Plant Growth RegulatorsSynthetic Auxins and Weed Control
EasyOne-line MCQNew idea
Q105
Match List - I with List - II. List - I | List - II (a) Cells with active cell division capacity | (i) Vascular tissues (b) Tissue having…
Anatomy of Flowering Plants Plant Tissues and AnatomyParenchyma, Collenchyma and Sclerenchyma
EasyMatch the listsIdea asked in 3 papers
Q106
Which of the following is not an application of PCR (Polymerase Chain Reaction) ?
Biotechnology and its Applications Gene TherapyMolecular Diagnosis Prerequisite
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q107
Which of the following is a correct sequence of steps in a PCR (Polymerase Chain Reaction) ?
Biotechnology: Principles and Processes Polymerase Chain ReactionDNA Denaturation Step
EasyOne-line MCQNew idea
Q108
When gene targetting involving gene amplification is attempted in an individual's tissue to treat disease, it is known as :
Biotechnology and its Applications Gene TherapyGene Therapy Definition
EasyOne-line MCQNew idea
Q109
Mutations in plant cells can be induced by :
Strategies for Enhancement in Food Production Plant and Animal BreedingMutation Breeding
EasyOne-line MCQNew idea
Q110
Which of the following algae produce Carrageen ?
Plant Kingdom Algae ClassificationAlgin vs Carrageen Sources
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q111
Diadelphous stamens are found in :
Morphology of Flowering Plants Flower StructureStamen Cohesion Types
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q112
Which of the following statements is not correct ?
Ecosystem Energy Flow in EcosystemInverted Pyramid of Biomass
EasyOne-line MCQIdea asked in 2 papers
Q113
Which of the following are not secondary metabolites in plants ?
Biomolecules Biomolecule StructurePrimary vs. Secondary Metabolites
EasyOne-line MCQNew idea
Q114
Gemmae are present in :
Plant Kingdom BryophytesLiverwort Structure and Gemmae
EasyOne-line MCQNew idea
Q115
When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as :
Cell: The Unit of Life Nuclear OrganizationChromosome Types by Centromere
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q116
The factor that leads to Founder effect in a population is :
Evolution Natural SelectionFounder Effect in Adaptive Radiation
EasyOne-line MCQNew idea
Q117
Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as :
Plant Kingdom PteridophytesHomospory vs Heterospory
EasyOne-line MCQIdea asked in 2 papers
Q118
In the equation GPP − R = NPP R represents :
Ecosystem Energy Flow in EcosystemNet Primary Productivity (NPP) Equation
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q119
Which of the following plants is monoecious ?
Plant Kingdom GymnospermsMonoecious and Dioecious Plant Groups
MediumOne-line MCQIdea asked in 2 papers
Q120
The amount of nutrients, such as carbon, nitrogen, phosphorus and calcium present in the soil at any given time, is referred as :
Ecosystem Energy Flow in EcosystemStanding State vs Standing Crop Distinction
EasyOne-line MCQNew idea
Q121
The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings…
Sexual Reproduction in Flowering Plants Pollination MechanismsTypes of Pollination
EasyOne-line MCQNew idea
Q122
Match List - I with List - II. List - I | List - II (a) Lenticels | (i) Phellogen (b) Cork cambium | (ii) Suberin deposition (c) Secondary…
Anatomy of Flowering Plants Plant Tissues and AnatomyCork Cambium and Periderm
MediumMatch the listsIdea asked in 2 papers
Q123
DNA strands on a gel stained with ethidium bromide when viewed under UV radiation, appear as :
Biotechnology: Principles and Processes Restriction EnzymesUV Visualization of DNA
EasyOne-line MCQIdea asked in 3 papersAsked the year before
Q124
Which of the following stages of meiosis involves division of centromere ?
Cell Cycle and Cell Division Mitotic DivisionCentromere Splitting
EasyOne-line MCQNew idea
Q125
The production of gametes by the parents, formation of zygotes, the $F_1$ and $F_2$ plants, can be understood from a diagram called :
Principles of Inheritance and Variation Mendelian InheritanceMonohybrid Punnett Square
EasyOne-line MCQNew idea
Q126
Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is…
Plant Growth and Development Plant Growth and DifferentiationDedifferentiation and Redifferentiation
EasyOne-line MCQNew ideaIdea asked in 3 papers
Q127
Amensalism can be represented as :
Organisms and Populations Population InteractionsAmensalism Concept (-/0)
EasyOne-line MCQNew idea
Q128
Match List - I with List - II. List - I | List - II (a) Protoplast fusion | (i) Totipotency (b) Plant tissue culture | (ii) Pomato (c)…
Strategies for Enhancement in Food Production Plant and Animal BreedingMicropropagation and Meristem Culture
MediumMatch the listsNew idea
Q129
Inspite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival ?
Organisms and Populations Population InteractionsResource Partitioning
EasyOne-line MCQNew idea
Q130
Which of the following algae contains mannitol as reserve food material ?
Plant Kingdom Algae ClassificationAlgal Food Storage
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q131
The site of perception of light in plants during photoperiodism is :
Plant Growth and Development PhotoperiodismSite of Photoperiodic Perception
EasyOne-line MCQIdea asked in 2 papers
Q132
The first stable product of $\mathrm{CO_2}$ fixation in sorghum is :
Photosynthesis in Higher Plants Calvin and Hatch-Slack CyclesFirst Stable Product of C4 Cycle
EasyOne-line MCQNew idea
Q133
Match List - I with List - II. List - I | List - II (a) Cristae | (i) Primary constriction in chromosome (b) Thylakoids | (ii) Disc-shaped…
Cell: The Unit of Life Mitochondria and PlastidsCristae Surface Area Maximization
EasyMatch the listsNew idea
Q134
Complete the flow chart on central dogma. (a) [circular arrow on] DNA $\xrightarrow{(b)}$ mRNA $\xrightarrow{(c)}$ (d)
Molecular Basis of Inheritance DNA Double HelixCentral Dogma
EasyOne-line MCQ · figureNew idea
Q135
Match List - I with List - II. List - I | List - II (a) Cohesion | (i) More attraction in liquid phase (b) Adhesion | (ii) Mutual…
Transport in Plants Transpiration PullCohesion and Adhesion
EasyMatch the listsNew ideaIdea asked in 2 papers
Q136
Which of the following statements is incorrect ?
Photosynthesis in Higher Plants Photosynthetic Light ReactionThylakoid vs Stroma Lamellae Distribution
MediumOne-line MCQNew idea
Q137
Select the correct pair.
Anatomy of Flowering Plants Plant Tissues and AnatomyFormation of the Cambial Ring
HardOne-line MCQNew idea
Q138
Identify the correct statement.
Molecular Basis of Inheritance Transcription ProcessInitiation/Elong/Term
MediumOne-line MCQNew idea
Q139
Match List - I with List - II. List - I | List - II (a) S phase | (i) Proteins are synthesized (b) $G_2$ phase | (ii) Inactive phase (c)…
Cell Cycle and Cell Division Mitotic DivisionEvents of G1, S and G2
EasyMatch the listsIdea asked in 3 papersAsked the year before
Q140
Match Column - I with Column - II. Column - I | Column - II (a) Nitrococcus | (i) Denitrification (b) Rhizobium | (ii) Conversion of…
Mineral Nutrition Nitrogen FixationNitrification: Ammonia to Nitrite
EasyMatch the listsNew idea
Q141
Match Column - I with Column - II. Column - I | Column - II (a) % ⚥ $K_{(5)}C_{1+2+(2)}A_{(9)+1}\underline{G}_1$ | (i) Brassicaceae (b) ⊕…
Morphology of Flowering Plants Floral Formulae and Plant FamiliesFloral Formula Symbols
HardMatch the listsNew idea
Q142
Match List - I with List - II. List - I | List - II (a) Protein | (i) C = C double bonds (b) Unsaturated fatty acid | (ii) Phosphodiester…
Biomolecules Biomolecule StructurePeptide Bond Formation
EasyMatch the listsNew ideaIdea asked in 2 papers
Q143
Which of the following statements is incorrect ?
Respiration in Plants TCA CycleNADH to ATP Equivalence
MediumOne-line MCQNew idea
Q144
DNA fingerprinting involves identifying differences in some specific regions in DNA sequence, called as :
Molecular Basis of Inheritance Human Genome ProjectDNA Fingerprinting and VNTRs
MediumOne-line MCQNew idea
Q145
Which of the following statements is correct ?
Biological Classification Kingdom FungiPlasmogamy and Karyogamy
MediumOne-line MCQNew idea
Q146
Now a days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise its complimentary DNA in a…
Biotechnology and its Applications Gene TherapyProbe Hybridisation and Autoradiography
MediumOne-line MCQNew idea
Q147
Plasmid pBR322 has PstI restriction enzyme site within gene $amp^{R}$ that confers ampicillin resistance. If this enzyme is used for…
Biotechnology: Principles and Processes Cloning VectorsPvuI/PstI Site Insertional Inactivation
MediumOne-line MCQNew idea
Q148
In some members of which of the following pairs of families, pollen grains retain their viability for months after release ?
Sexual Reproduction in Flowering Plants Pollination MechanismsExtended Pollen Viability Families
MediumOne-line MCQNew idea
Q149
What is the role of RNA polymerase III in the process of transcription in eukaryotes ?
Molecular Basis of Inheritance Transcription ProcessRNA Polymerase III Function
MediumOne-line MCQNew ideaIdea asked in 3 papers
Q150
In the exponential growth equation $N_t = N_oe^{rt}$ , e represents :
Organisms and Populations Population AttributesExponential Growth Equation
EasyOne-line MCQNew idea

Zoology50 questions

34 easy16 medium0 hard

Q151
Read the following statements. (a) Metagenesis is observed in Helminths. (b) Echinoderms are triploblastic and coelomate animals. (c)…
Animal Kingdom Animal Kingdom: Basis of Classification and Non-chordatesPhyla Sharing Combined Features
MediumOtherIdea asked in 3 papersAsked the year before
Q152
Match List - I with List - II. List - I | List - II (a) Metamerism | (i) Coelenterata (b) Canal system | (ii) Ctenophora (c) Comb plates |…
Animal Kingdom Animal Kingdom: Basis of Classification and Non-chordatesDistinctive Structures of Phyla
EasyMatch the listsIdea asked in 4 papersAsked the year before
Q153
Which of the following statements wrongly represents the nature of smooth muscle ?
Structural Organisation in Animals Animal TissuesSmooth Muscle Morphology
EasyOne-line MCQNew idea
Q154
The centriole undergoes duplication during :
Cell Cycle and Cell Division Mitotic DivisionEvents of G1, S and G2
EasyOne-line MCQIdea asked in 3 papersAsked the year before
Q155
With regard to insulin choose correct options. (a) C-peptide is not present in mature insulin. (b) The insulin produced by rDNA technology…
Biotechnology and its Applications Genetically Engineered InsulinInsulin Maturation Process
MediumOtherNew idea
Q156
Match List - I with List - II. List - I | List - II (a) Vaults | (i) Entry of sperm through Cervix is blocked (b) IUDs | (ii) Removal of…
Reproductive Health Contraceptive MethodsBarrier Contraceptives
EasyMatch the listsNew ideaIdea asked in 2 papers
Q157
Which of the following RNAs is not required for the synthesis of protein ?
Molecular Basis of Inheritance Genetic Code and TranslationRibosome Structure and Role
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q158
Identify the incorrect pair.
Biomolecules Biomolecule StructureSecondary Metabolites: Toxins and Lectins
MediumOne-line MCQNew idea
Q159
A specific recognition sequence identified by endonucleases to make cuts at specific positions within the DNA is :
Biotechnology: Principles and Processes Restriction EnzymesPalindromic Sequences
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q160
Which of the following is not an objective of Biofortification in crops ?
Strategies for Enhancement in Food Production Plant and Animal BreedingBiofortification
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q161
Chronic auto immune disorder affecting neuro muscular junction leading to fatigue, weakening and paralysis of skeletal muscle is called as :
Locomotion and Movement Human Skeleton and Musculoskeletal DisordersMuscular Disorders
EasyOne-line MCQIdea asked in 3 papers
Q162
Which one of the following belongs to the family Muscidae ?
The Living World Taxonomic HierarchyHousefly Order vs Family Trap
EasyOne-line MCQNew idea
Q163
The partial pressures (in mm Hg) of oxygen ( $\mathrm{O_2}$ ) and carbon dioxide ( $\mathrm{CO_2}$ ) at alveoli (the site of diffusion) are :
Breathing and Exchange of Gases Oxygen Dissociation CurvePartial Pressures of O2 and CO2
EasyOne-line MCQNew idea
Q164
During the process of gene amplification using PCR, if very high temperature is not maintained in the beginning, then which of the…
Biotechnology: Principles and Processes Polymerase Chain ReactionDNA Denaturation Step
EasyOne-line MCQNew idea
Q165
Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins ?
Body Fluids and Circulation Blood Composition, Groups and CoagulationBlood Coagulation
EasyOne-line MCQNew ideaIdea asked in 3 papers
Q166
The organelles that are included in the endomembrane system are :
Cell: The Unit of Life Endomembrane System and Cell TheoryMembers of the Endomembrane System
EasyOne-line MCQNew ideaIdea asked in 3 papers
Q167
Which one of the following is an example of Hormone releasing IUD ?
Reproductive Health Contraceptive MethodsIUD Classifications
EasyOne-line MCQNew ideaIdea asked in 3 papers
Q168
Succus entericus is referred to as :
Digestion and Absorption Digestive EnzymesSuccus Entericus Composition
EasyOne-line MCQNew idea
Q169
Select the favourable conditions required for the formation of oxyhaemoglobin at the alveoli.
Breathing and Exchange of Gases Oxygen Dissociation CurveAlveolar Conditions for Oxyhemoglobin
EasyOne-line MCQIdea asked in 3 papersAsked the year before
Q170
Veneral diseases can spread through : (a) Using sterile needles (b) Transfusion of blood from infected person (c) Infected mother to…
Reproductive Health Reproductive Health and STIsTransmission of STIs
EasyOtherNew idea
Q171
The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis if the number of chromosomes at $G_1$ phase is 8, what…
Cell Cycle and Cell Division Mitotic DivisionTracking Ploidy and DNA Content
EasyOne-line MCQNew idea
Q172
If Adenine makes 30% of the DNA molecule, what will be the percentage of Thymine, Guanine and Cytosine in it ?
Molecular Basis of Inheritance DNA Double HelixChargaff's Rules
EasyNumericalNew idea
Q173
Which one of the following organisms bears hollow and pneumatic long bones ?
Animal Kingdom Chordate ClassesAves
MediumOne-line MCQIdea asked in 3 papers
Q174
Which is the “Only enzyme” that has “Capability” to catalyse Initiation, Elongation and Termination in the process of transcription in…
Molecular Basis of Inheritance Transcription ProcessInitiation/Elong/Term
EasyOne-line MCQNew idea
Q175
Match the following : List - I | List - II (a) Physalia | (i) Pearl oyster (b) Limulus | (ii) Portuguese Man of War (c) Ancylostoma |…
Animal Kingdom Animal Kingdom: Basis of Classification and Non-chordatesCommon Names of Animals
MediumMatch the listsNew idea
Q176
Which stage of meiotic prophase shows terminalisation of chiasmata as its distinctive feature ?
Cell Cycle and Cell Division Meiotic Prophase ITerminalisation
EasyOne-line MCQNew idea
Q177
Dobson units are used to measure thickness of :
Environmental Issues Ozone DepletionDobson Units
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q178
Sphincter of oddi is present at :
Digestion and Absorption Digestive EnzymesSphincter of Oddi Function
EasyOne-line MCQNew idea
Q179
In a cross between a male and female, both heterozygous for sickle cell anaemia gene, what percentage of the progeny will be diseased ?
Principles of Inheritance and Variation Mendelian InheritanceMonohybrid Punnett Square
EasyOne-line MCQNew idea
Q180
Persons with 'AB' blood group are called as “Universal recipients”. This is due to :
Body Fluids and Circulation Blood Composition, Groups and CoagulationABO Blood Groups
EasyOne-line MCQNew idea
Q181
Which of the following characteristics is incorrect with respect to cockroach ?
Structural Organisation in Animals Cockroach AnatomyHepatic Caecae Location and Function
MediumOne-line MCQNew idea
Q182
Erythropoietin hormone which stimulates R.B.C. formation is produced by :
Chemical Coordination and Integration Endocrine Glands and Hormone ActionHormones of Heart, Kidney and Gut
MediumOne-line MCQNew ideaIdea asked in 3 papers
Q183
Match List - I with List - II. List - I | List - II (a) Aspergillus niger | (i) Acetic Acid (b) Acetobacter aceti | (ii) Lactic Acid (c)…
Microbes in Human WelfareMicrobial Organic Acids
EasyMatch the listsNew idea
Q184
Receptors for sperm binding in mammals are present on :
Human Reproduction Female Reproductive SystemZona Pellucida Formation
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q185
For effective treatment of the disease, early diagnosis and understanding its pathophysiology is very important. Which of the following…
Biotechnology and its Applications Gene TherapyMolecular Diagnosis Prerequisite
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q186
Statement I : The codon 'AUG' codes for methionine and phenylalanine. Statement II : 'AAA' and 'AAG' both codons code for the amino acid…
Molecular Basis of Inheritance Genetic Code and TranslationProperties of Genetic Code
EasyTwo statementsIdea asked in 2 papers
Q187
Match List - I with List - II. List - I | List - II (a) Scapula | (i) Cartilaginous joints (b) Cranium | (ii) Flat bone (c) Sternum |…
Locomotion and Movement Skeletal JointsFibrous Joints
EasyMatch the listsNew ideaIdea asked in 2 papers
Q188
Which of the following is not a step in Multiple Ovulation Embryo Transfer Technology (MOET) ?
Strategies for Enhancement in Food Production Plant and Animal BreedingMultiple Ovulation Embryo Transfer
MediumOne-line MCQNew idea
Q189
Which of the following secretes the hormone, relaxin, during the later phase of pregnancy ?
Human Reproduction Pregnancy, Embryonic Development and ParturitionHormones of Pregnancy
MediumOne-line MCQNew idea
Q190
Which one of the following statements about Histones is wrong ?
Molecular Basis of Inheritance DNA Double HelixHistone Amino Acid Composition
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q191
Identify the types of cell junctions that help to stop the leakage of the substances across a tissue and facilitation of communication…
Structural Organisation in Animals Animal TissuesCell Junction Functions
EasyOne-line MCQNew idea
Q192
Following are the statements with reference to 'lipids'. (a) Lipids having only single bonds are called unsaturated fatty acids. (b)…
Biomolecules Biomolecule StructureFatty Acid Carbon Counting
MediumOtherNew idea
Q193
Match List - I with List - II. List - I | List - II (a) Filariasis | (i) Haemophilus influenzae (b) Amoebiasis | (ii) Trichophyton (c)…
Human Health and Disease Human Diseases, Cancer and Drug AbuseDiseases and Their Pathogens
EasyMatch the listsIdea asked in 5 papersAsked the year before
Q194
During muscular contraction which of the following events occur ? (a) 'H' zone disappears (b) 'A' band widens (c) 'I' band reduces in…
Locomotion and Movement Sliding Filament TheorySpecific Band Changes During Contraction
MediumOtherNew idea
Q195
Assertion (A) : A person goes to high altitude and experiences 'altitude sickness' with symptoms like breathing difficulty and heart…
Breathing and Exchange of Gases Oxygen Dissociation CurveEffect of pO2 on Binding
EasyAssertion–reasonNew idea
Q196
Match List - I with List - II. List - I | List - II (a) Adaptive radiation | (i) Selection of resistant varieties due to excessive use of…
Evolution Natural SelectionAdaptive Radiation
EasyMatch the listsNew idea
Q197
Following are the statements about prostomium of earthworm. (a) It serves as a covering for mouth. (b) It helps to open cracks in the soil…
Animal Kingdom Animal Kingdom: Basis of Classification and Non-chordatesEarthworm Morphology
MediumOtherNew idea
Q198
The Adenosine deaminase deficiency results into :
Biotechnology and its Applications Gene TherapyADA Role in Immune System
EasyOne-line MCQNew idea
Q199
Match List - I with List - II. List - I | List - II (a) Allen's Rule | (i) Kangaroo rat (b) Physiological adaptation | (ii) Desert lizard…
Organisms and Populations Organism and Its EnvironmentPhysiological, Behavioural and Biochemical Adaptations
MediumMatch the listsNew idea
Q200
Which of these is not an important component of initiation of parturition in humans ?
Human Reproduction Pregnancy, Embryonic Development and ParturitionParturition
MediumOne-line MCQNew idea

Questions from the official NEET UG papers published by NTA (CBSE before 2019). Topic and idea tags, difficulty and notes are Lumi’s.

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Every NEET paper, 2017 to 2026

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How is difficulty decided?

Each question is rated easy, medium or hard by how many steps and how much recall it needs. It is Lumi’s rating, not NTA’s, and it is the same scale for every year.

What is a “new idea”?

Inside each topic we tag the exact idea a question tests. A new idea is one that no earlier paper in our data had tested. The first year, 2017, has nothing to compare with.

Does this tell me what will come next year?

No. It shows weightage and patterns from past papers. Chapters and topics repeat; exact questions rarely do.

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How the 2021 paper split

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Which chapters got more, and which got less

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All 83 chapters asked

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All 200 questions of NEET 2021

Every NEET paper, 2017 to 2026