NEET UG · Chemistry · The p-Block Elements (Class 11)

p-Block (Group 13-14): NEET previous year questions

12 questions in ten years of NEET, in 7 of 10 papers. Pattern: Every year. Here is how it is asked and which ideas come back.

Asked in 10 years: 12; about 1.2 per paper
Years asked: 7/10; last asked 2026
Chance of a question next paper: 64%; historical rate, how we compute it
Weighted estimate: 1.1; model; history: 1.2 a paper on average, typically 0–2

Key findings

01
Asked in 7 of 10 papers, 12 questions in all: #59 of 204 topics by ten-year total. It comes back every 1.5 years on average.
02
82% of its questions since 2018 tested an idea never asked before; none repeated an idea from the year before.
03
The most repeated idea is Maximum Covalency of Boron, asked 2 times (2018, 2026), usually as “identify element unable to form complex ion”.
04
NEET has asked 9 of the 70 ideas in this topic; 58 have never been asked, directly or indirectly.
05
Mostly asked as one-line MCQ (83%); 42% easy, 0% hard, and down from 1.4 to 0.7 questions a paper since 2024.

Questions per year

Up to 2023: 1.4; per paper
Since 2024: 0.7; -0.7
Usual gap: 1.5 yrs; between papers asking it
Swing: ±0.9; questions, year to year

How it is asked

Difficulty, format and skill

Across all 12 questions on p-Block (Group 13-14) since 2017.

Difficulty

QUESTIONS

Easy5 · 42%
Medium7 · 58%
Hard0 · 0%

Format

One-line MCQ · 10 Q83%
Match the lists · 1 Q8%
Other · 1 Q8%

Skill tested

Concept · 7 Q58%
Recall · 5 Q42%

Repeats

New idea, or one asked before?

Each column is a paper. Blue questions tested an idea NEET had not asked before; navy ones went back to an idea from an earlier paper. 2017 is the first paper, so everything in it counts as new.

’17’18’19’20’21’22’23’24’25’26

Idea asked for the first time
Idea asked in an earlier paper

Coverage of the topic

NEET has asked 9 of the 70 ideas in this topic. 58 have never been asked yet.

958

Asked directly9 · 13%
Touched inside another question3 · 4%
Never asked58 · 83%

Ideas come from Lumi’s syllabus map of NCERT. A never-asked idea is not a safe skip: most new questions come from exactly these.

Drill down

Idea, year, question

Every idea NEET tested in this topic, with its ten papers. Open one to read the questions.

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

Repeated2 · 17%17%2/10
- 2023 · Q51
  Taking stability as the factor, which one of the following represents correct relationship?
  mediumOne-line MCQ
- 2019 · Q57
  Which of the following is incorrect statement ?
  mediumOne-line MCQNew idea
Repeated2 · 17%17%2/10
1 · 8%8%1/10
1 · 8%8%1/10
1 · 8%8%1/10
1 · 8%8%1/10
1 · 8%8%1/10
1 · 8%8%1/10
1 · 8%8%1/10
1 · 8%8%1/10

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

Ideas

Every idea inside this topic

10 different ideas were tested; 2 came more than once. Inert Pair Effect in Group 13 is the foundation for 7 other ideas in the syllabus.

Maximum Covalency of Boron2×
identify element unable to form complex ion
One-line MCQ · 6% next · foundation for 4
Inert Pair Effect in Group 132×
order/ranking of stability of halides
One-line MCQ · 6% next · foundation for 7
Alums1×
identify composition of a compound
One-line MCQ · 6% next
Diamond vs Graphite Structure1×
match list on carbon allotropes
Match the lists · 4% next · foundation for 5
Structure and Bonding in Diborane1×
identify incorrect statement on diborane
One-line MCQ · 4% next · foundation for 5
Mechanism of Carbon Monoxide Toxicity1×
identify incorrect statement on carbon monoxide
One-line MCQ · 4% next
Zeolites and ZSM-5 Catalysis1×
count correct statements on carbon compounds
Other · 4% next
Hydrolysis Mechanism of SiCl4 vs CCl41×
identify species that is not stable
One-line MCQ · 4% next · foundation for 1
Atomic Size Anomaly in Group 131×
order/ranking of atomic radii
One-line MCQ · 4% next · foundation for 1
Redox Behavior of Tin and Lead1×
consequence of inert pair effect
One-line MCQ · 4% next

Idea	Times	Format	Chance next	Foundation for
Maximum Covalency of Boronidentify element unable to form complex ion	2	One-line MCQConcept	6%	4 ideas
Inert Pair Effect in Group 13order/ranking of stability of halides	2	One-line MCQConcept	6%	7 ideas
Alumsidentify composition of a compound	1	One-line MCQRecall	6%	–
Diamond vs Graphite Structurematch list on carbon allotropes	1	Match the listsRecall	4%	5 ideas
Structure and Bonding in Diboraneidentify incorrect statement on diborane	1	One-line MCQConcept	4%	5 ideas
Mechanism of Carbon Monoxide Toxicityidentify incorrect statement on carbon monoxide	1	One-line MCQConcept	4%	–
Zeolites and ZSM-5 Catalysiscount correct statements on carbon compounds	1	OtherRecall	4%	–
Hydrolysis Mechanism of SiCl4 vs CCl4identify species that is not stable	1	One-line MCQConcept	4%	1 ideas
Atomic Size Anomaly in Group 13order/ranking of atomic radii	1	One-line MCQRecall	4%	1 ideas
Redox Behavior of Tin and Leadconsequence of inert pair effect	1	One-line MCQConcept	4%	–

Chance next is the historical rate at which an idea with this record came back in the following paper. It is low for every idea, which is why learning the topic beats memorising past questions. All repeated ideas

Every question

p-Block (Group 13-14) questions, year by year

The opening words of each question as it appeared in the official paper, with the idea it tested.

NEET 20262 questions

Q49
In potash alum, the ratio of $\mathrm{K^+}$ and $\mathrm{SO_4^{2-}}$ ions is
Idea: Alums
New ideaEasyOne-line MCQ
Q73
The correct statement is
Idea: Maximum Covalency of Boron
MediumOne-line MCQ

NEET 20232 questions

Q51
Taking stability as the factor, which one of the following represents correct relationship?
Idea: Inert Pair Effect in Group 13
MediumOne-line MCQ
Q61
Match List - I with List - II : List - I | List - II A. Coke | I. Carbon atoms are sp $^3$ hybridised. B. Diamond | II. Used as a dry…
Idea: Diamond vs Graphite Structure
New ideaMediumMatch the lists

NEET 20221 question

Q78
Which of the following statement is not correct about diborane ?
Idea: Structure and Bonding in Diborane
New ideaMediumOne-line MCQ

NEET 20202 questions

Q93
Identify the correct statements from the following : (a) $\mathrm{CO_2(g)}$ is used as refrigerant for ice-cream and frozen food. (b) The…
Idea: Zeolites and ZSM-5 Catalysis
New ideaMediumOther
Q120
Which of the following is not correct about carbon monoxide ?
Idea: Mechanism of Carbon Monoxide Toxicity
New ideaEasyOne-line MCQ

NEET 20192 questions

Q57
Which of the following is incorrect statement ?
Idea: Inert Pair Effect in Group 13
New ideaMediumOne-line MCQ
Q81
Which of the following species is not stable ?
Idea: Hydrolysis Mechanism of SiCl4 vs CCl4
New ideaMediumOne-line MCQ

NEET 20182 questions

Q47
Which one of the following elements is unable to form $\mathrm{MF_6^{3-}}$ ion ?
Idea: Maximum Covalency of Boron
New ideaEasyOne-line MCQ
Q49
The correct order of atomic radii in group 13 elements is
Idea: Atomic Size Anomaly in Group 13
New ideaEasyOne-line MCQ

NEET 20171 question

Q56
It is because of inability of $ns^2$ electrons of the valence shell to participate in bonding that
Idea: Redox Behavior of Tin and Lead
EasyOne-line MCQ

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