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MCQs

Total Questions : 2096 | Page 204 of 210 pages
Question 2031. __________ increases with increase in pressure.
  1.    The boiling point of a liquid
  2.    Both A and B
  3.    Neither A nor B
  4.    The melting point of wax
 Discuss Question
Answer: Option B. -> Both A and B
Question 2032. Throttling process is a/an __________ process.
  1.    Irreversible and constant enthalpy
  2.    Reversible and constant enthalpy
  3.    Reversible and constant entropy
  4.    Reversible and isothermal
 Discuss Question
Answer: Option A. -> Irreversible and constant enthalpy
Question 2033. As the time is passing, entropy of the universe
  1.    Data insufficient, can't be predicted
  2.    Is increasing
  3.    Remains constant
  4.    Is decreasing
 Discuss Question
Answer: Option B. -> Is increasing
Question 2034. The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is
  1.    Data insufficient, can't be predicted
  2.    Less pronounced
  3.    Equal
  4.    More pronounced
 Discuss Question
Answer: Option D. -> More pronounced
Question 2035. "The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in the pure state at the total pressure of the mixture". This is
  1.    Henry's law
  2.    The statement as per Gibbs-Helmholtz
  3.    Called Lewis-Randall rule
  4.    None of these
 Discuss Question
Answer: Option C. -> Called Lewis-Randall rule
Question 2036. The internal energy of a gas obeying P (V - b) RT (where, b is a positive constant and has a constant Cv), depends upon its
  1.    Volume
  2.    Pressure
  3.    Temperature
  4.    All of these
 Discuss Question
Answer: Option C. -> Temperature
Question 2037. The partial molar enthalpy of a component in an ideal binary gas mixture of composition Z, at a temperature T and pressure P, is a function only of
  1.    T, P and Z
  2.    T and Z
  3.    T
  4.    T and P
 Discuss Question
Answer: Option D. -> T and P
Question 2038. Which of the following behaves most closely like an ideal gas?
  1.    He
  2.    N₂
  3.    O₂
  4.    H₂
 Discuss Question
Answer: Option A. -> He
Question 2039. Equilibrium constant decreases as the temperature
  1.    Increases, for an exothermic reaction
  2.    Increases, for an endothermic reaction
  3.    Decreases, for an exothermic reaction
  4.    None of these
 Discuss Question
Answer: Option A. -> Increases, for an exothermic reaction
Question 2040. The absolute entropy for all crystalline substances at absolute zero temperature is
  1.    Negative
  2.    More than zero
  3.    Zero
  4.    Indeterminate
 Discuss Question
Answer: Option C. -> Zero

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