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Entropy Questions

Practice 11 Entropy questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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11
Total Questions
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1
Easy
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10
Medium
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0
Hard
Practice by Exam:Chemistry(9)Physics(2)

About Entropy โ€” practice questions, PYQs & concepts

Entropy is a frequently-tested topic on Chemistry, Physics. ExamTest.live currently lists 11 Entropy questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year โ€” every answer key is free, no sign-up required.

Entropy weight in competitive exams

Across our Entropy question bank, the largest sources are Chemistry (9) and Physics (2). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 1 easy Entropy questions are available โ€” build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
  • Time yourself: Every question shows the average solve time so you can benchmark your speed against other students.
  • Read every explanation: Even on questions you got right โ€” the explanation often surfaces a faster approach you can reuse.

All Entropy Questions(1โ€“11 of 11)

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Q1easymcqChemistryNEET 20192026
0% accuracy
In which case change in entropy is negative?
Q2mediummcqChemistryNEET 2020 E12026
For the reaction, , the correct option is:
Q3mediummcqChemistryNEET 20212026
For irreversible expansion of an ideal gas under isothermal condition, the correct option is:
Q4mediummcqChemistryNEET (UG) 20242026
In which of the following processes does entropy increase?(A) Liquid evaporating to vapor.(B) Lowering the temperature of a gas.(C) Decomposition of to , , and .(D) Dissociation of into .
Q5mediummcqPhysicsAIEEE2026
The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is:
image
Q6mediummcqChemistryAIEEE2026
Standard entropy of , and are , and , respectively. For the reaction , . For the reaction to be at equilibrium, the temperature will be:
Q7mediummcqPhysicsPhysics
0% accuracy
When of ice at melts to water at , the resulting change in its entropy, taking latent heat of ice to be is approximately:
Q8mediummcqChemistryChemistry
0% accuracy
If the enthalpy change for the transition of liquid water to steam is at , the entropy change for the process would be:
Q9mediummcqChemistryChemistry
Standard entropies of and are and respectively. For the reaction to be at equilibrium, the temperature should be:
Q10mediummcqChemistryChemistry
The enthalpy of fusion of water is . The molar entropy change for the melting of ice at is:
Q11mediummcqChemistryChemistry
For a sample of perfect gas when its pressure is changed isothermally from to , the entropy change is given by:

Frequently Asked Questions

How many Entropy questions are on ExamTest.live?โ–ผ
We have 11 Entropy questions spread across 1 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
Are Entropy MCQs free?โ–ผ
Yes. All Entropy questions, answers, and explanations on ExamTest.live are completely free. No account or subscription required.
Which exams include Entropy questions?โ–ผ
Entropy questions are commonly asked in Chemistry, Physics. You can filter by exam using the links above.
How do I practice Entropy questions effectively?โ–ผ
Start with easy questions to build confidence, then tackle medium and hard ones. Use the filter buttons to sort by difficulty. Reveal the answer only after attempting each question, and read the explanation thoroughly.