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MCQs

Total Questions : 98 | Page 4 of 10 pages
Question 31. Q amount of heat is transferred to a system, which of the following is correct?
  1.    Q > 0
  2.    Q < 0
  3.    Q = 0
  4.    Cannot say
 Discuss Question
Answer: Option A. -> Q > 0
Answer: (a).Q > 0
Question 32. Temperature of a system is increased with no change in internal energy, if the work done by the system is 10 Joule, what amount of heat is taken out from the system?
  1.    10 J
  2.    – 10 J
  3.    0
  4.    5 J
 Discuss Question
Answer: Option B. -> – 10 J
Answer: (b).– 10 J
Question 33. Ratio heat transferred from 37°C to a colder body and from that body to – 11°C is 2, what is the temperature of colder body if surface areas are same for all bodies?
  1.    – 5°C
  2.    – 3°C
  3.    5°C
  4.    9°C
 Discuss Question
Answer: Option C. -> 5°C
Answer: (c).5°C
Question 34. What is the degrees of freedom of a system with pure water?
  1.    2
  2.    4
  3.    5
  4.    7
 Discuss Question
Answer: Option A. -> 2
Answer: (a).2
Question 35. What is the degrees of freedom of a system with mixture of copper pyrites, liquid benzene and helium?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option B. -> 2
Answer: (b).2
Question 36. What is the degrees of freedom of a system with mixture of water and ice?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option A. -> 1
Answer: (a).1
Question 37. What is the degrees of freedom of a system with mixture of ice, water and neon?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option C. -> 3
Answer: (c).3
Question 38. What is the degrees of freedom of a system with mixture of water, liquid benzene and oxygen?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option C. -> 3
Answer: (c).3
Question 39. What is called the ratio of partial pressure of vapor and partial pressure of dry gas?
  1.    Humidity
  2.    Relative humidity
  3.    Molal humidity
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Molal humidity
Answer: (c).Molal humidity
Question 40. What is the molal saturation of a gas with 10 moles of gas vapor and 25 moles of dry gas?
  1.    0.2
  2.    0.4
  3.    0.8
  4.    1
 Discuss Question
Answer: Option B. -> 0.4
Answer: (b).0.4

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