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p-Block Elements JENPAS MCQ & Practice Questions

Practice p-Block Elements MCQs for JENPAS Chemistry with answers, explanations, chapter revision and related ChemNexa mock tests.

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p-Block Elements Revision Guide for JENPAS 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 JENPAS Chemistry, organise revision group-wise and compare oxidation states, acidic or basic character, anomalous behaviour, structures and important reactions.

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

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 JENPAS 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.

JENPAS Chemistry · p-Block Elements · Very Very Hard

1. p-Block reasoning: The general valence-shell configuration of Group 17 elements is:

  • A. ns2np5
  • B. ns2np4
  • C. ns2np3
  • D. ns2np6
Answer: A
Explanation: Halogens possess seven valence electrons.

JENPAS Chemistry · p-Block Elements · Very Very Hard

2. p-Block reasoning: The valence-shell configuration of Group 18 elements except He is:

  • A. ns2np5
  • B. ns2np4
  • C. ns1
  • D. ns2np6
Answer: D
Explanation: Noble gases have a closed valence shell.

JENPAS Chemistry · p-Block Elements · Very Very Hard

3. p-Block reasoning: The stability of +3 oxidation state down Group 15 generally:

  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Becomes zero
Answer: A
Explanation: The inert-pair effect stabilises lower oxidation states down the group.

JENPAS Chemistry · p-Block Elements · Very Very Hard

4. The general valence-shell configuration of Group 17 elements is:

  • A. ns2np5
  • B. ns2np4
  • C. ns2np3
  • D. ns2np6
Answer: A
Explanation: Halogens possess seven valence electrons.

JENPAS Chemistry · p-Block Elements · Very Very Hard

5. The valence-shell configuration of Group 18 elements except He is:

  • A. ns2np5
  • B. ns2np4
  • C. ns1
  • D. ns2np6
Answer: D
Explanation: Noble gases have a closed valence shell.

JENPAS Chemistry · p-Block Elements · Very Very Hard

6. The stability of +3 oxidation state down Group 15 generally:

  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Becomes zero
Answer: A
Explanation: The inert-pair effect stabilises lower oxidation states down the group.

JENPAS Chemistry · p-Block Elements · Very Very Hard

7. Interhalogen compounds are formed between:

  • A. A halogen and a noble gas only
  • B. Carbon and hydrogen only
  • C. Two different halogens
  • D. Two alkali metals
Answer: C
Explanation: Examples include ClF, BrF3 and IF7.

JENPAS Chemistry · p-Block Elements · Very Very Hard

8. The shape of ClF3 is:

  • A. Tetrahedral
  • B. T-shaped
  • C. Trigonal planar
  • D. Linear
Answer: B
Explanation: Two lone pairs occupy equatorial positions in a trigonal-bipyramidal electron arrangement.

JENPAS Chemistry · p-Block Elements · Very Very Hard

9. The shape of BrF5 is:

  • A. Square pyramidal
  • B. Trigonal bipyramidal
  • C. Square planar
  • D. T-shaped
Answer: A
Explanation: BrF5 has six electron domains with one lone pair.

JENPAS Chemistry · p-Block Elements · Very Very Hard

10. The shape of IF7 is:

  • A. Octahedral
  • B. Square pyramidal
  • C. Trigonal bipyramidal
  • D. Pentagonal bipyramidal
Answer: D
Explanation: Seven bonding pairs give pentagonal-bipyramidal geometry.

JENPAS Chemistry · p-Block Elements · Very Very Hard

11. Which noble gas compound is square planar?

  • A. XeF4
  • B. XeF2
  • C. XeF6
  • D. XeO3
Answer: A
Explanation: XeF4 has square-planar molecular geometry.

JENPAS Chemistry · p-Block Elements · Very Very Hard

12. Which species has pentagonal-bipyramidal geometry?

  • A. ClF3
  • B. BrF5
  • C. XeF4
  • D. IF7
Answer: D
Explanation: IF7 has seven bonding pairs around iodine.

JENPAS Chemistry · p-Block Elements · Very Very Hard

13. JENPAS advanced: The general valence-shell configuration of Group 17 elements is:

  • A. ns2np3
  • B. ns2np6
  • C. ns2np5
  • D. ns2np4
Answer: C
Explanation: Halogens possess seven valence electrons.

JENPAS Chemistry · p-Block Elements · Very Very Hard

14. JENPAS advanced: The valence-shell configuration of Group 18 elements except He is:

  • A. ns1
  • B. ns2np6
  • C. ns2np5
  • D. ns2np4
Answer: B
Explanation: Noble gases have a closed valence shell.

JENPAS Chemistry · p-Block Elements · Very Very Hard

15. JENPAS advanced: The stability of +3 oxidation state down Group 15 generally:

  • A. Remains constant
  • B. Becomes zero
  • C. Increases
  • D. Decreases
Answer: C
Explanation: The inert-pair effect stabilises lower oxidation states down the group.

JENPAS Chemistry · p-Block Elements · Very Very Hard

16. JENPAS advanced: Interhalogen compounds are formed between:

  • A. Two different halogens
  • B. Two alkali metals
  • C. A halogen and a noble gas only
  • D. Carbon and hydrogen only
Answer: A
Explanation: Examples include ClF, BrF3 and IF7.

JENPAS Chemistry · p-Block Elements · Very Very Hard

17. JENPAS advanced: The shape of ClF3 is:

  • A. Trigonal planar
  • B. Linear
  • C. Tetrahedral
  • D. T-shaped
Answer: D
Explanation: Two lone pairs occupy equatorial positions in a trigonal-bipyramidal electron arrangement.

JENPAS Chemistry · p-Block Elements · Very Very Hard

18. JENPAS advanced: The shape of BrF5 is:

  • A. Square planar
  • B. T-shaped
  • C. Square pyramidal
  • D. Trigonal bipyramidal
Answer: C
Explanation: BrF5 has six electron domains with one lone pair.

JENPAS Chemistry · p-Block Elements · Very Very Hard

19. JENPAS advanced: The shape of IF7 is:

  • A. Trigonal bipyramidal
  • B. Pentagonal bipyramidal
  • C. Octahedral
  • D. Square pyramidal
Answer: B
Explanation: Seven bonding pairs give pentagonal-bipyramidal geometry.

JENPAS Chemistry · p-Block Elements · Very Very Hard

20. JENPAS advanced: Which noble gas compound is square planar?

  • A. XeF6
  • B. XeO3
  • C. XeF4
  • D. XeF2
Answer: C
Explanation: XeF4 has square-planar molecular geometry.

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p-Block Elements Practice Tests

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.

Continue with another chapter to build connected concepts and strengthen your overall Chemistry preparation.

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