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MCQs

Total Questions : 1058 | Page 83 of 106 pages
Question 821. The amount of heat required to raise the temperature of 1 kg of water through one Kelvin is called
  1.    None of these
  2.    kilo-Joule
  3.    Specific heat at constant volume
  4.    Specific heat at constant pressure
 Discuss Question
Answer: Option B. -> kilo-Joule
Question 822. The absolute zero pressure will be
  1.    When molecular momentum of the system becomes zero
  2.    At sea level
  3.    At the temperature of - 273 K
  4.    At the center of the earth
 Discuss Question
Answer: Option A. -> When molecular momentum of the system becomes zero
Question 823. In an isothermal process, the internal energy of gas molecules
  1.    Increases
  2.    Remain constant
  3.    Decreases
  4.    May increase/decrease depending on the properties of gas
 Discuss Question
Answer: Option B. -> Remain constant
Question 824. According to which law, all perfect gases change in volume by 1/273th of their original volume at 0°C for every 1°C change in temperature when pressure remains constant
  1.    Charles' law
  2.    Joule's law
  3.    Gay Lussac’s law
  4.    Boyle's law
 Discuss Question
Answer: Option A. -> Charles' law
Question 825. Energy can neither be created nor destroyed but can be converted from one form to other is inferred from
  1.    First law of thermodynamics
  2.    Basic law of thermodynamics
  3.    Second law to thermodynamics
  4.    Zeroth low of thermodynamic
 Discuss Question
Answer: Option A. -> First law of thermodynamics
Question 826. The fuel mostly used in steam boilers is
  1.    Non-coking bituminous coal
  2.    Brown coal
  3.    Coking bituminous coal
  4.    Peat
 Discuss Question
Answer: Option A. -> Non-coking bituminous coal
Question 827. For which of the following substances, the internal energy and enthalpy are the functions of temperature only
  1.    Water
  2.    Any gas
  3.    Perfect gas
  4.    Saturated steam
 Discuss Question
Answer: Option C. -> Perfect gas
Question 828. An open cycle gas turbine works on
  1.    Stirling cycle
  2.    Joule's cycle
  3.    Carnot cycle
  4.    Otto cycle
 Discuss Question
Answer: Option B. -> Joule's cycle
Question 829. The mass of flue gas per kg of fuel is the ratio of the
  1.    Mass of oxygen in 1 kg of fuel to the mass of oxygen in 1 kg of flue gas
  2.    Mass of carbon in 1 kg of flue gas to the mass of carbon in 1 kg of fuel
  3.    Mass of carbon in 1 kg of fuel to the mass of carbon in 1 kg of flue gas
  4.    Mass of oxygen in 1 kg of flue gas to the mass of oxygen in 1 kg of fuel
 Discuss Question
Answer: Option B. -> Mass of carbon in 1 kg of flue gas to the mass of carbon in 1 kg of fuel
Question 830. Water contained in a beaker can be made to boil by passing steam through it
  1.    At atmospheric pressure
  2.    Not possible
  3.    At a pressure greater than atmospheric pressure
  4.    Any pressure
 Discuss Question
Answer: Option C. -> At a pressure greater than atmospheric pressure

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