Important Topics
- Group-wise periodic trends
- Anomalous behaviour of first elements
- Oxidation states and inert-pair effect
- Structures of important compounds
- Acidic and basic character
- Important reactions and uses
p-Block Elements (Class XII) — NEET Practice
Practice Class XII p-Block MCQs for NEET with worked solutions, concise revision notes and linked ChemNexa mock tests to reinforce concepts.
Register Free for Full Chemistry PracticeThe p-Block Elements (Class XII) Revision Guide for NEET Chemistry
p-Block Elements covers periodic trends, structures, oxidation states and important compounds of groups 13 to 18 depending on the syllabus. Questions often test trends together with exceptions.
For NEET Chemistry, organise revision group-wise and compare oxidation states, acidic or basic character, anomalous behaviour, structures and important reactions.
Revision Tip
Create a one-page summary of trends, structures, reactions, exceptions and key terminology for The p-Block Elements (Class XII), then test recall with mixed MCQs.
What to practise in The p-Block Elements (Class XII)
Concept Revision
Revise definitions, principles, equations, trends and core ideas from The p-Block Elements (Class XII) before attempting MCQs.
Exam-style MCQs
Use chapter-focused multiple-choice practice to improve accuracy, recall and application for NEET Chemistry.
Performance Practice
Attempt ChemNexa tests, review results and return to weak areas for another round of targeted revision.
Top 20 The p-Block Elements (Class XII) MCQs with Answers
These public questions are selected from the exact The p-Block Elements (Class XII) chapter, screened for topic relevance and deduplicated so repeated versions of the same MCQ are not shown publicly. Use them for quick revision, then sign in to attempt the complete test experience with more questions, results and performance review.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
1. The general valence-shell configuration of halogens is:
Answer: D
Explanation: Group 17 elements possess seven valence electrons with configuration ns2np5.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
2. Interhalogen compounds are generally:
Answer: C
Explanation: Their bonds are relatively polar and often weaker, making them reactive.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
3. The shape of ClF3 is:
Answer: B
Explanation: Five electron pairs with two equatorial lone pairs produce a T-shaped molecule.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
4. The shape of IF7 is:
Answer: A
Explanation: Seven bond pairs around iodine give pentagonal bipyramidal geometry.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
5. The general valence-shell configuration of Group 15 elements is:
Answer: C
Explanation: Group 15 elements possess five valence electrons with configuration ns2np3.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
6. The stability of the +5 oxidation state down Group 15 generally:
Answer: B
Explanation: The inert-pair effect makes the ns2 pair less available down the group, destabilising the higher +5 state relative to +3.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
7. The stability of the +3 oxidation state down Group 15 generally:
Answer: A
Explanation: The inert-pair effect increasingly stabilises the +3 state down the group.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
8. Nitrogen differs from the heavier Group 15 elements mainly because of its:
Answer: D
Explanation: Nitrogen is small, highly electronegative and cannot expand its octet using d orbitals.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
9. Ammonia has a higher boiling point than phosphine mainly because ammonia:
Answer: B
Explanation: N–H bonds and the lone pair enable strong intermolecular hydrogen bonding in NH3.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
10. The basicity order of Group 15 hydrides is generally:
Answer: A
Explanation: The lone pair becomes less available for donation down the group, so basicity decreases.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
11. The thermal stability order of Group 15 hydrides is:
Answer: D
Explanation: E–H bond strength decreases down the group as atomic size increases.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
12. The basicity of H3PO2 is:
Answer: C
Explanation: Only one hydrogen is bonded to oxygen and ionisable; the two P–H hydrogens are not acidic.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
13. The basicity of H3PO3 is:
Answer: B
Explanation: H3PO3 has two P–OH bonds and one P–H bond, so it is dibasic.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
14. H3PO2 acts as a strong reducing agent because it contains:
Answer: A
Explanation: P–H bonds are responsible for the reducing character of phosphorus oxoacids.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
15. The general valence-shell configuration of Group 16 elements is:
Answer: D
Explanation: Group 16 elements possess six valence electrons with configuration ns2np4.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
16. The acidic character of Group 16 hydrides increases in the order:
Answer: C
Explanation: E–H bond strength decreases down the group, making proton release easier.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
17. The thermal stability order of Group 16 hydrides is:
Answer: B
Explanation: Bond strength decreases down the group, reducing thermal stability.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
18. In H3PO2, the number of P–H bonds is:
Answer: C
Explanation: H3PO2 has structure HOPH2, containing two P–H bonds.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
19. In H3PO3, the number of ionisable O–H hydrogens is:
Answer: B
Explanation: Its structure is HP(=O)(OH)2, so two hydrogens are ionisable.
NEET Chemistry · The p-Block Elements (Class XII) · Very Hard
20. For the equilibrium 2NO2 ⇌ N2O4, increasing pressure favours:
Answer: A
Explanation: The side with fewer gas moles, N2O4, is favoured at higher pressure.
The p-Block Elements (Class XII) Practice Tests
Chapter 20 p Block Elements Class XII Set 01
Chapter-wise Practice · Very Hard
Chapter 20 p Block Elements Class XII Set 02
Chapter-wise Practice · Very Hard
Chapter 20 p Block Elements Class XII Set 03
Chapter-wise Practice · Very Hard
Chapter 20 p Block Elements Class XII Set 04
Chapter-wise Practice · Very Hard
Chapter 20 p Block Elements Class XII Set 05
Chapter-wise Practice · Very Hard
Chapter 20 p Block Elements Class XII Set 06
Chapter-wise Practice · Very Hard
Chapter 20 p Block Elements Class XII Set 07
Chapter-wise Practice · Very Hard
Chapter 20 p Block Elements Class XII Set 08
Chapter-wise Practice · Very Hard
Chapter 20 p Block Elements Class XII Set 09
Chapter-wise Practice · Very Hard
Chapter 20 p Block Elements Class XII Set 10
Chapter-wise Practice · Very Hard
The p-Block Elements (Class XII) Frequently Asked Questions
How should I memorise p-Block Chemistry?
Use comparison tables by group and focus on trends, important exceptions, structures and reactions instead of memorising disconnected facts.
Why are exceptions important in p-Block questions?
Small size, high electronegativity, absence of d orbitals in second-period elements and inert-pair effects create frequently tested deviations from simple trends.
What is a good revision method for p-Block?
Revise one group at a time, write the common oxidation states and key compounds, then immediately solve targeted MCQs.
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