NEET UG · Chemistry · The s-Block Elements

s-Block Elements: NEET previous year questions

This topic’s chapter, The s-Block Elements, is not in the NEET UG 2026 syllabus. It had 6 questions from 2017 to 2023; they are kept here for reference.

Asked in 10 years: 6; about 0.6 per paper
Years asked: 4/10; last asked 2023
Syllabus: Dropped; not in NEET UG 2026
Last asked: 2023; 3 papers ago

Key findings

01
Asked in 4 of 10 papers, 6 questions in all: #138 of 204 topics by ten-year total. It comes back every 2.0 years on average. Last asked in 2023.
02
100% of its questions since 2018 tested an idea never asked before; none repeated an idea from the year before.
03
No idea in this topic has been asked twice: every question tested something new.
04
NEET has asked 5 of the 80 ideas in this topic; 73 have never been asked, directly or indirectly.
05
Mostly asked as one-line MCQ (67%); 33% easy, 0% hard, and down from 0.8 to 0.0 questions a paper since 2024.

Questions per year

Up to 2023: 0.8; per paper
Since 2024: 0.0; -0.8
Usual gap: 2.0 yrs; between papers asking it
Swing: ±0.8; questions, year to year

How it is asked

Difficulty, format and skill

Across all 6 questions on s-Block Elements since 2017.

Difficulty

QUESTIONS

Easy2 · 33%
Medium4 · 67%
Hard0 · 0%

Format

One-line MCQ · 4 Q67%
Assertion–reason · 1 Q17%
Match the lists · 1 Q17%

Skill tested

Concept · 3 Q50%
Recall · 2 Q33%
Application · 1 Q17%

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 5 of the 80 ideas in this topic. 73 have never been asked yet.

Asked directly5 · 6%
Touched inside another question2 · 3%
Never asked73 · 91%

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

1 · 17%17%1/10
- 2020 · Q122
  The following metal ion activates many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for…
  easyOne-line MCQNew idea
1 · 17%17%1/10
1 · 17%17%1/10
1 · 17%17%1/10
1 · 17%17%1/10
1 · 17%17%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

6 different ideas were tested; none came more than once. Hydration Enthalpy of Group 1 Ions is the foundation for 5 other ideas in the syllabus.

Solution in Liquid Ammonia1×
assertion-reason on alkali metal solutions
Assertion–reason · 4% next · foundation for 3
Oxide, Peroxide, and Superoxide1×
identify incorrect statement on alkali metals
One-line MCQ · 4% next · foundation for 2
Uses of Alkali Metals and Compounds1×
match list on uses of alkali metals
Match the lists · 4% next
Biological Role of Sodium and Potassium1×
identify ion from biological role
One-line MCQ · 4% next
Purification of Sodium Chloride1×
predict which salt crystallises by common ion effect
One-line MCQ · 4% next
Hydration Enthalpy of Group 1 Ions1×
order/ranking of property
One-line MCQ · 4% next · foundation for 5

Idea	Times	Format	Chance next	Foundation for
Solution in Liquid Ammoniaassertion-reason on alkali metal solutions	1	Assertion–reasonConcept	4%	3 ideas
Oxide, Peroxide, and Superoxideidentify incorrect statement on alkali metals	1	One-line MCQConcept	4%	2 ideas
Uses of Alkali Metals and Compoundsmatch list on uses of alkali metals	1	Match the listsRecall	4%	–
Biological Role of Sodium and Potassiumidentify ion from biological role	1	One-line MCQRecall	4%	–
Purification of Sodium Chloridepredict which salt crystallises by common ion effect	1	One-line MCQApplication	4%	–
Hydration Enthalpy of Group 1 Ionsorder/ranking of property	1	One-line MCQConcept	4%	5 ideas

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

s-Block Elements questions, year by year

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

NEET 20231 question

Q84
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : Metallic sodium…
Idea: Solution in Liquid Ammonia
New ideaEasyAssertion–reason

NEET 20222 questions

Q57
Identify the incorrect statement from the following
Idea: Oxide, Peroxide, and Superoxide
New ideaMediumOne-line MCQ
Q68
Match List - I with List - II. List - I | List - II (a) Li | (i) absorbent for carbon dioxide (b) Na | (ii) electrochemical cells (c) KOH…
Idea: Uses of Alkali Metals and Compounds
New ideaMediumMatch the lists

NEET 20202 questions

Q118
HCl was passed through a solution of $\mathrm{CaCl_2}$ , $\mathrm{MgCl_2}$ and NaCl. Which of the following compound(s) crystallise(s) ?
Idea: Purification of Sodium Chloride
New ideaMediumOne-line MCQ
Q122
The following metal ion activates many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for…
Idea: Biological Role of Sodium and Potassium
New ideaEasyOne-line MCQ

NEET 20171 question

Q85
Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field ?
Idea: Hydration Enthalpy of Group 1 Ions
MediumOne-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.