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 WBCHSE Class 12 MCQ & Practice Questions
Practice p-Block Elements MCQs for WBCHSE Class 12 Chemistry with answers, explanations, chapter revision and related ChemNexa mock tests.
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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 WBCHSE Class 12 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 p-Block Elements, then test recall with mixed MCQs.
What to practise in p-Block Elements
Concept Revision
Revise definitions, principles, equations, trends and core ideas from p-Block Elements before attempting MCQs.
Exam-style MCQs
Use chapter-focused multiple-choice practice to improve accuracy, recall and application for WBCHSE Class 12 Chemistry.
Performance Practice
Attempt ChemNexa tests, review results and return to weak areas for another round of targeted revision.
Top 20 p-Block Elements MCQs with Answers
These public questions are selected from the exact p-Block Elements 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.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
1. The general valence-shell configuration of Group 17 is:
Answer: D
Explanation: Halogens possess seven valence electrons.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
2. The oxidising power of halogens generally follows:
Answer: B
Explanation: Oxidising strength decreases down Group 17.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
3. Interhalogen compounds are formed between:
Answer: C
Explanation: Interhalogens contain two or more different halogen elements.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
4. Which is an interhalogen compound?
Answer: B
Explanation: ClF3 contains two different halogens.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
5. The shape of ClF3 is:
Answer: A
Explanation: Five electron pairs around Cl with two lone pairs give a T-shaped molecule.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
6. The first noble-gas compound was prepared by:
Answer: C
Explanation: Bartlett's work led to xenon compound chemistry.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
7. The general valence-shell configuration of Group 15 elements is:
Answer: C
Explanation: Group 15 elements contain five valence electrons, ns2np3.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
8. The most common oxidation states of Group 15 include:
Answer: B
Explanation: Group 15 commonly exhibits -3, +3 and +5 oxidation states.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
9. The stability of the +5 oxidation state down Group 15 generally:
Answer: A
Explanation: The inert-pair effect increasingly stabilises the lower +3 state.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
10. Nitrogen differs markedly from heavier Group 15 elements because it:
Answer: D
Explanation: Small size, high electronegativity and absence of d orbitals cause anomalous behaviour.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
11. The general valence-shell configuration of Group 16 is:
Answer: B
Explanation: Group 16 elements have six valence electrons.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
12. SO2 generally acts as a:
Answer: A
Explanation: Sulfur in +4 can be oxidised to +6, so SO2 commonly behaves as a reducing agent.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
13. The shape of SO2 is:
Answer: D
Explanation: A lone pair on sulfur gives a bent molecular shape.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
14. Concentrated H2SO4 acts as a strong:
Answer: C
Explanation: Concentrated sulfuric acid removes water and can oxidise many substances.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
15. Contact process is used industrially to manufacture:
Answer: B
Explanation: Sulfuric acid is manufactured by catalytic oxidation of SO2 in the Contact process.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
16. The catalyst used in the Contact process is commonly:
Answer: A
Explanation: V2O5 catalyses oxidation of SO2 to SO3.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
17. The strongest oxidising halogen is:
Answer: C
Explanation: Fluorine has the highest reduction potential among the halogens.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
18. The general valence-shell configuration of noble gases is:
Answer: D
Explanation: Noble gases have closed valence shells; helium is 1s2.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
19. Xenon forms compounds most readily with:
Answer: B
Explanation: Known xenon chemistry is dominated by highly electronegative F and O.
WBCHSE Class 12 Chemistry · p-Block Elements · Very Hard
20. The shape of XeF2 is:
Answer: A
Explanation: Three equatorial lone pairs in a trigonal-bipyramidal electron arrangement leave axial F atoms.
p-Block Elements Practice Tests
Chapter 07 p Block Elements Set 01
Chapter-wise Practice · Very Hard
Chapter 07 p Block Elements Set 02
Chapter-wise Practice · Very Hard
Chapter 07 p Block Elements Set 03
Chapter-wise Practice · Very Hard
Chapter 07 p Block Elements Set 04
Chapter-wise Practice · Very Hard
Chapter 07 p Block Elements Set 05
Chapter-wise Practice · Very Hard
Chapter 07 p Block Elements Set 06
Chapter-wise Practice · Very Hard
Chapter 07 p Block Elements Set 07
Chapter-wise Practice · Very Hard
Chapter 07 p Block Elements Set 08
Chapter-wise Practice · Very Hard
Chapter 07 p Block Elements Set 08
Chapter-wise Practice · Very Hard
Chapter 07 p Block Elements Set 10
Chapter-wise Practice · Very Hard
p-Block Elements 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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