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Solid State JENPAS MCQ & Practice Questions

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Solid State Revision Guide for JENPAS Chemistry

Solid State is part of JENPAS Chemistry preparation. A strong revision plan should combine concept review with exam-style questions so that definitions, relationships, calculations and exceptions are recalled accurately.

Use the sample MCQs on this page to check understanding, then attempt the related ChemNexa tests for broader practice. When an answer is wrong, review the explanation and return to the underlying concept before attempting another set.

Important Topics

  • Core definitions and principles
  • Important equations or relationships
  • Common applications and examples
  • Frequently confused concepts
  • Exam-style multiple-choice questions
  • Error review and targeted revision

Revision Tip

Create a one-page summary of trends, structures, reactions, exceptions and key terminology for Solid State, then test recall with mixed MCQs.

What to practise in Solid State

Concept Revision

Revise definitions, principles, equations, trends and core ideas from Solid State 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 Solid State MCQs with Answers

These public questions are selected from the exact Solid State 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 · Solid State · Very Very Hard

1. A crystalline solid is characterised by:

  • A. No definite arrangement
  • B. Complete randomness
  • C. Long-range order
  • D. Only short-range order
Answer: C
Explanation: Crystalline solids possess long-range periodic arrangement.

JENPAS Chemistry · Solid State · Very Very Hard

2. An amorphous solid generally has:

  • A. Perfect cleavage planes
  • B. Short-range order
  • C. Long-range periodicity
  • D. Sharp melting point always
Answer: B
Explanation: Amorphous solids lack long-range order.

JENPAS Chemistry · Solid State · Very Very Hard

3. Which is an amorphous solid?

  • A. Glass
  • B. NaCl
  • C. Quartz crystal
  • D. Diamond
Answer: A
Explanation: Glass lacks long-range crystalline order.

JENPAS Chemistry · Solid State · Very Very Hard

4. Which is a molecular solid?

  • A. NaCl
  • B. Diamond
  • C. Copper
  • D. Ice
Answer: D
Explanation: Ice is built from H2O molecules held together mainly by hydrogen bonding.

JENPAS Chemistry · Solid State · Very Very Hard

5. Which is an ionic solid?

  • A. Diamond
  • B. Cu
  • C. NaCl
  • D. I2
Answer: C
Explanation: NaCl consists of Na+ and Cl- ions.

JENPAS Chemistry · Solid State · Very Very Hard

6. Which is a covalent network solid?

  • A. Copper
  • B. Diamond
  • C. NaCl
  • D. Solid CO2
Answer: B
Explanation: Diamond is a three-dimensional covalent network.

JENPAS Chemistry · Solid State · Very Very Hard

7. Which is a metallic solid?

  • A. Copper
  • B. Ice
  • C. NaCl
  • D. Diamond
Answer: A
Explanation: Copper atoms are held together by metallic bonding.

JENPAS Chemistry · Solid State · Very Very Hard

8. A unit cell is:

  • A. An isolated atom
  • B. A complete macroscopic crystal
  • C. A defect only
  • D. The smallest repeating unit of a crystal lattice
Answer: D
Explanation: Repeating a unit cell in three dimensions generates the crystal.

JENPAS Chemistry · Solid State · Very Very Hard

9. The number of lattice points in a simple cubic unit cell effectively is:

  • A. 4
  • B. 8
  • C. 1
  • D. 2
Answer: C
Explanation: Eight corner atoms each contribute 1/8, totaling 1.

JENPAS Chemistry · Solid State · Very Very Hard

10. The number of atoms per body-centred cubic unit cell is:

  • A. 6
  • B. 2
  • C. 1
  • D. 4
Answer: B
Explanation: Eight corners contribute 1 plus one body-centred atom, giving 2.

JENPAS Chemistry · Solid State · Very Very Hard

11. The number of atoms per face-centred cubic unit cell is:

  • A. 4
  • B. 2
  • C. 1
  • D. 6
Answer: A
Explanation: Corners contribute 1 and six face-centred atoms contribute 3, total 4.

JENPAS Chemistry · Solid State · Very Very Hard

12. Coordination number of simple cubic structure is:

  • A. 8
  • B. 12
  • C. 4
  • D. 6
Answer: D
Explanation: Each atom has six nearest neighbours.

JENPAS Chemistry · Solid State · Very Very Hard

13. Coordination number of body-centred cubic structure is:

  • A. 12
  • B. 4
  • C. 8
  • D. 6
Answer: C
Explanation: A BCC atom has eight nearest neighbours.

JENPAS Chemistry · Solid State · Very Very Hard

14. Coordination number of face-centred cubic structure is:

  • A. 4
  • B. 12
  • C. 8
  • D. 6
Answer: B
Explanation: FCC has coordination number 12.

JENPAS Chemistry · Solid State · Very Very Hard

15. Packing efficiency of simple cubic structure is approximately:

  • A. 52.4%
  • B. 68%
  • C. 74%
  • D. 100%
Answer: A
Explanation: Simple cubic packing fills about 52.4% of space.

JENPAS Chemistry · Solid State · Very Very Hard

16. Packing efficiency of BCC structure is approximately:

  • A. 52.4%
  • B. 74%
  • C. 90%
  • D. 68%
Answer: D
Explanation: BCC packing efficiency is about 68%.

JENPAS Chemistry · Solid State · Very Very Hard

17. Packing efficiency of FCC/CCP structure is approximately:

  • A. 52.4%
  • B. 100%
  • C. 74%
  • D. 68%
Answer: C
Explanation: FCC/CCP is a close-packed arrangement with 74% efficiency.

JENPAS Chemistry · Solid State · Very Very Hard

18. In simple cubic packing, edge length a and atomic radius r are related by:

  • A. a=r
  • B. a=2r
  • C. a=4r/√3
  • D. a=2√2 r
Answer: B
Explanation: Atoms touch along the cube edge.

JENPAS Chemistry · Solid State · Very Very Hard

19. In BCC, edge length a and radius r satisfy:

  • A. √3 a=4r
  • B. a=2r
  • C. √2 a=4r
  • D. a=4r
Answer: A
Explanation: Atoms touch along the body diagonal.

JENPAS Chemistry · Solid State · Very Very Hard

20. In FCC, edge length a and radius r satisfy:

  • A. √3 a=4r
  • B. a=2r
  • C. a=4r
  • D. √2 a=4r
Answer: D
Explanation: Atoms touch along the face diagonal.

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Solid State Practice Tests

Solid State Frequently Asked Questions

How should I prepare Solid State for JENPAS Chemistry?

Revise the core concepts first, make a short list of important relationships or exceptions, and then solve chapter-focused MCQs while reviewing every error.

How can ChemNexa help with Solid State practice?

This page provides public sample questions and links to published ChemNexa tests so you can combine quick revision with structured practice.

What should I do after getting an MCQ wrong?

Identify whether the mistake came from a concept gap, calculation, unit, sign, wording or memory error, review that point, and then attempt a similar question again.

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

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