A. increases
B. decreases
C. remains constant
D. first increases and then decreases
E. first decreases and then increases

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Related Mcqs:

  1. In an isothermal process, the internal energy of gas molecules________________?
    A. increases B. decreases C. remains constant D. may increase/decrease depending on the properties of gas E. shows unpredictable behaviour...
  2. A gas is compressed in a cylinder by a movable piston to a volume one-half its original volume. During the process 300 kJ heat left the gas and internal energy remained same. The work done on gas in Nm will be___________________?
    A. 300 Nm B. 300,000 Nm C. 30 Nm D. 3000 Nm E. 30,000 Nm...
  3. Change in internal energy in a closed system is equal to heat transferred if the reversible process takes place at constant_______________?
    A. pressure B. temperature C. volume D. internal energy E. entropy...
  4. For which of the following substances, the internal energy and enthalpy are the functions of temperature only____________________?
    A. any gas B. saturated steam C. water D. perfect gas E. superheated steam...
  5. Which law states that the internal energy of a gas is a function of temperature__________________?
    A. Charles’ law B. Joule’s law C. Regnault’s law D. Boyle’s law E. there is no such law...
  6. If value of n is infinitely large in a polytropic process pV” = C, then the process is known as constant_____________________?
    A. volume B. pressure C. temperature D. enthalpy E. entropy...
  7. Work done in a free expansion process is___________________?
    A. + ve B. -ve C. zero D. maximum E. minimum...
  8. The value of n = 1 in the poly tropic process indicates it to be __________________?
    A. reversible process B. isothermal process C. adiabatic process D. irreversible process E. free expansion process...
  9. If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called___________________?
    A. free expansion B. hyperbolic expansion C. adiabatic expansion D. parabolic expansion E. throttling...
  10. Work done in an adiabatic process between a given pair of end states depends on__________________?
    A. the end states only B. particular adiabatic process C. the value of index n D. the value of heattransferred E. mass of the system...
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