CN  ChemNexa

Entropy, Gibbs Energy & Spontaneity NEET MCQs

Practice entropy, Gibbs free energy and spontaneity MCQs for NEET with solved explanations, quick concept notes and related mock tests.

Register Free for Full Chemistry Practice

Entropy Gibbs Energy and Spontaneity Revision Guide for NEET Chemistry

Entropy Gibbs Energy and Spontaneity is part of NEET 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 Entropy Gibbs Energy and Spontaneity, then test recall with mixed MCQs.

What to practise in Entropy Gibbs Energy and Spontaneity

Concept Revision

Revise definitions, principles, equations, trends and core ideas from Entropy Gibbs Energy and Spontaneity 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 Entropy Gibbs Energy and Spontaneity MCQs with Answers

These public questions are selected from the exact Entropy Gibbs Energy and Spontaneity 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 · Entropy Gibbs Energy and Spontaneity · Very Very Hard

1. Which principle is essential when solving a quantitative problem in Entropy Gibbs Energy and Spontaneity?

  • A. Assuming all coefficients are unity
  • B. Ignoring limiting conditions
  • C. Conservation of mass and charge where applicable
  • D. Ignoring units
Answer: C
Explanation: Mass and charge conservation are fundamental.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

2. At equilibrium in a reversible system related to Entropy Gibbs Energy and Spontaneity, which statement is correct?

  • A. The catalyst is consumed
  • B. Forward and reverse rates are equal
  • C. All molecular motion stops
  • D. Reactant and product concentrations must be equal
Answer: B
Explanation: Dynamic equilibrium has equal forward and reverse rates.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

3. For a spontaneous process at constant T and P in a Entropy Gibbs Energy and Spontaneity context, ΔG is:

  • A. Negative
  • B. Positive
  • C. Always zero
  • D. Always equal to ΔH
Answer: A
Explanation: Spontaneity at constant T,P requires ΔG<0.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

4. Which statement about a catalyst in Entropy Gibbs Energy and Spontaneity is correct?

  • A. It changes ΔG°
  • B. It changes reaction enthalpy
  • C. It is always consumed
  • D. It lowers the activation barrier without changing K at fixed T
Answer: D
Explanation: Catalysts affect kinetics, not equilibrium thermodynamics.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

5. Oxidation in a redox step relevant to Entropy Gibbs Energy and Spontaneity means:

  • A. No oxidation-number change
  • B. Only gain of hydrogen
  • C. Loss of electrons
  • D. Gain of electrons
Answer: C
Explanation: Oxidation is electron loss.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

6. Reduction in a redox step relevant to Entropy Gibbs Energy and Spontaneity means:

  • A. Only loss of hydrogen
  • B. Gain of electrons
  • C. Loss of electrons
  • D. Increase in oxidation number
Answer: B
Explanation: Reduction is electron gain.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

7. A Lewis acid encountered in Entropy Gibbs Energy and Spontaneity is an:

  • A. Electron-pair acceptor
  • B. Electron-pair donor
  • C. Proton acceptor only
  • D. Anion only
Answer: A
Explanation: Lewis acids accept electron pairs.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

8. A Lewis base encountered in Entropy Gibbs Energy and Spontaneity is an:

  • A. Electron-pair acceptor
  • B. Cation only
  • C. Oxidising agent only
  • D. Electron-pair donor
Answer: D
Explanation: Lewis bases donate electron pairs.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

9. Which is a state function useful in Entropy Gibbs Energy and Spontaneity?

  • A. Work
  • B. Path length
  • C. Enthalpy
  • D. Heat
Answer: C
Explanation: Enthalpy is path independent.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

10. The relation between standard Gibbs energy and equilibrium constant is:

  • A. ΔG°=RT/K
  • B. ΔG°=-RT lnK
  • C. ΔG°=RT lnK
  • D. ΔG°=-KRT
Answer: B
Explanation: The standard thermodynamic relation is ΔG°=-RT lnK.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

11. For a first-order kinetic process in Entropy Gibbs Energy and Spontaneity, half-life equals:

  • A. 0.693/k
  • B. k/0.693
  • C. 1/(k[A]0)
  • D. [A]0/(2k)
Answer: A
Explanation: First-order t1/2=0.693/k.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

12. The Arrhenius equation is:

  • A. k=Ae^(Ea/RT)
  • B. k=EaRT
  • C. k=A/RT
  • D. k=Ae^(-Ea/RT)
Answer: D
Explanation: Arrhenius equation relates k to activation energy and temperature.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

13. For an ideal dilute solution relevant to Entropy Gibbs Energy and Spontaneity, molarity is:

  • A. Grams solute per mole solvent
  • B. Moles solvent per litre
  • C. Moles solute per litre solution
  • D. Moles solute per kg solvent
Answer: C
Explanation: M=n/V(L).

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

14. For a weak acid, a larger Ka generally indicates:

  • A. A stronger conjugate acid
  • B. A stronger acid
  • C. A weaker acid
  • D. No ionisation
Answer: B
Explanation: Larger Ka means greater ionisation.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

15. At 25°C, pH+pOH for aqueous solution is:

  • A. 14
  • B. 7
  • C. 1
  • D. 0
Answer: A
Explanation: pH+pOH=pKw=14 at 25°C.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

16. For an electrochemical cell, oxidation occurs at:

  • A. Cathode
  • B. Salt bridge
  • C. Electrolyte only
  • D. Anode
Answer: D
Explanation: Oxidation occurs at the anode.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

17. For an electrochemical cell, reduction occurs at:

  • A. Salt bridge
  • B. Wire
  • C. Cathode
  • D. Anode
Answer: C
Explanation: Reduction occurs at the cathode.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

18. A positive E°cell implies:

  • A. No spontaneous reaction
  • B. ΔG°<0
  • C. ΔG°>0
  • D. K<1 necessarily
Answer: B
Explanation: ΔG°=-nFE°.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

19. Higher bond order generally corresponds to:

  • A. Shorter stronger bond
  • B. Longer weaker bond
  • C. Longer stronger bond
  • D. No bond-length effect
Answer: A
Explanation: Higher bond order strengthens and shortens bonds.

NEET Chemistry · Entropy Gibbs Energy and Spontaneity · Very Very Hard

20. A nucleophile in an organic reaction related to Entropy Gibbs Energy and Spontaneity is:

  • A. Electron-pair acceptor
  • B. Always positively charged
  • C. Always a radical
  • D. Electron-pair donor
Answer: D
Explanation: Nucleophiles donate electron pairs.

Login to Start Full Test

Entropy Gibbs Energy and Spontaneity Practice Tests

Entropy Gibbs Energy and Spontaneity Frequently Asked Questions

How should I prepare Entropy Gibbs Energy and Spontaneity for NEET 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 Entropy Gibbs Energy and Spontaneity 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.

Continue NEET Chemistry

View all NEET chapters and testsBrowse all Chemistry PracticeCreate a free account