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MCQs

Total Questions : 2096 | Page 28 of 210 pages
Question 271. In a reversible process
  1.    Tds = dE + dW
  2.    DE - dW = Tds
  3.    DW - dE = Tds
  4.    Tds - dW + dE >0
 Discuss Question
Answer: Option A. -> Tds = dE + dW
Question 272. Which of the following is not an intensive property?
  1.    Molar heat capacity
  2.    Internal energy
  3.    Viscosity
  4.    None of these
 Discuss Question
Answer: Option B. -> Internal energy
Question 273. Which of the following is not an intensive property?
  1.    Chemical potential
  2.    Surface tension
  3.    Heat capacity
  4.    None of these
 Discuss Question
Answer: Option C. -> Heat capacity
Question 274. 1/V (∂V/∂T)p is the mathematical expression
  1.    Joule-Thomson co-efficient
  2.    Specific heat at constant pressure (Cp)
  3.    Co-efficient of thermal expansion
  4.    Specific heat at constant volume (CV)
 Discuss Question
Answer: Option C. -> Co-efficient of thermal expansion
Question 275. Cp - Cv = R is valid for __________ gases.
  1.    Ideal
  2.    All
  3.    Very high pressure
  4.    Very low temperature
 Discuss Question
Answer: Option A. -> Ideal
Question 276. The change in Gibbs freee energy for vaporisation of a pure substance is
  1.    Positive
  2.    Negative
  3.    Zero
  4.    May be positive or negative
 Discuss Question
Answer: Option C. -> Zero
Question 277. The chemical potential for a pure substance is __________ its partial molal free energy.
  1.    More than
  2.    Less than
  3.    Equal to
  4.    Not related to
 Discuss Question
Answer: Option C. -> Equal to
Question 278. For a given substance at a specified temperature, activity is __________ to fugacity.
  1.    Directly proportional
  2.    Inversely proportional
  3.    Equal
  4.    None of these
 Discuss Question
Answer: Option A. -> Directly proportional
Question 279. The unit of fugacity is the same as that of the
  1.    Pressure
  2.    Temperature
  3.    Volume
  4.    Molar concentration
 Discuss Question
Answer: Option A. -> Pressure
Question 280. Claussius-Clayperon equation gives accurate result, when the
  1.    Vapour pressure is relatively low and the temperature does not vary over wide limits
  2.    Vapour obeys the ideal gas law and the latent heat of vaporisation is constant
  3.    Volume in the liquid state is negligible compared with that in the vapour state
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above

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