Selected MCQ

Current Question
Which process is reversible?
  • A. Friction
  • B. Heat loss
  • C. Ideal isothermal expansion
  • D. Combustion
Correct Answer: C
Explanation:
Ideal reversible processes are quasi-static.
Related Question 1
Which law defines entropy change in irreversible processes?
  • A. First law
  • B. Second law
  • C. Third law
  • D. Zeroth law
Correct Answer: B
Explanation:
Entropy increases in irreversible processes.
Related Question 2
The entropy change for a reversible process is given by:
  • A. (dS = \delta Q)
  • B. (dS = \delta Q/T)
  • C. (dS = TdQ)
  • D. (dS = Q/T^2)
Correct Answer: B
Explanation:
Entropy change equals heat transfer divided by temperature in reversible processes.
Related Question 3
Which process produces zygote?
  • A. Pollination
  • B. Fertilization
  • C. Germination
  • D. Transpiration
Correct Answer: B
Explanation:
Fusion of gametes forms zygote.
Related Question 4
Which process forms soil?
  • A. Weathering
  • B. Fusion
  • C. Respiration
  • D. Photosynthesis
Correct Answer: A
Explanation:
Weathering breaks rocks.
Related Question 5
Which process transports water upward?
  • A. Diffusion
  • B. Osmosis
  • C. Transpiration
  • D. Active transport
Correct Answer: C
Explanation:
Transpiration pull drives ascent.