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MCQs

Total Questions : 1058 | Page 75 of 106 pages
Question 741. The ___ is obtained when carbonization of coal is carried out at 500° to 700° C.
  1.    Pulverized coal
  2.    Hard coal
  3.    Soft coal
  4.    Bituminous coal
 Discuss Question
Answer: Option C. -> Soft coal
Question 742. Work done in an adiabatic process between a given pair of end states depends on
  1.    The end states only
  2.    The value of heat transferred
  3.    Particular adiabatic process
  4.    The value of index ‘n’
 Discuss Question
Answer: Option A. -> The end states only
Question 743. The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as
  1.    Rankine cycle
  2.    Dual combustion cycle
  3.    Diesel cycle
  4.    Atkinson cycle
 Discuss Question
Answer: Option D. -> Atkinson cycle
Question 744. In a reversible adiabatic process, the ratio of T1/T2 is equal to
  1.    (v2/v1)γ - 1/ γ
  2.    (p1/p2)γ - 1/ γ
  3.    (p2/p1)γ - 1/ γ
  4.    (v1/v2)γ - 1/ γ
 Discuss Question
Answer: Option B. -> (p1/p2)γ - 1/ γ
Question 745. The increase in entropy of a system represents
  1.    Increase in temperature
  2.    Degradation of energy
  3.    Increase in availability of energy
  4.    Decrease in pressure
 Discuss Question
Answer: Option B. -> Degradation of energy
Question 746. Which of the following is not the intensive property?
  1.    Temperature
  2.    Density
  3.    Pressure
  4.    Heat
 Discuss Question
Answer: Option D. -> Heat
Question 747. The processes occurring in open system which permit the transfer of mass to and from the system, are known as
  1.    None of the listed here
  2.    Flow processes
  3.    Adiabatic processes
  4.    Non-flow processes
 Discuss Question
Answer: Option B. -> Flow processes
Question 748. Kinetic theory of gases assumes that the collisions between the molecules are
  1.    Perfectly elastic
  2.    Partly elastic
  3.    Perfectly inelastic
  4.    Partly inelastic
 Discuss Question
Answer: Option A. -> Perfectly elastic
Question 749. The ultimate analysis of coal consists of the determination of the percentage of
  1.    All of the listed here
  2.    Carbon
  3.    Hydrogen and nitrogen
  4.    Sulphur and ash
 Discuss Question
Answer: Option A. -> All of the listed here
Question 750. Which of the following gas is mostly used in town for street and domestic lighting and heating?
  1.    Coal gas
  2.    Producer gas
  3.    Mond gas
  4.    Coke oven gas
 Discuss Question
Answer: Option A. -> Coal gas

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