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MCQs

Total Questions : 1058 | Page 70 of 106 pages
Question 691.

If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly


  1.    temperature
  2.    enthalpy
  3.    internal energy
  4.    entropy
  5.    all of the above.
 Discuss Question
Answer: Option D. -> entropy



Question 692.


A pin-jointed plane frame is unstable if
where m is number of members, r is reaction components and j is number of joints 


  1.    (m + r)
  2.    m + r = 2j
  3.    (m + r)>2j
  4.    none of the above
 Discuss Question
Answer: Option A. -> (m + r)


Question 693.

According to kinetic theory of gases, the absolute zero temperature is attained when


  1.    volume of the gas is zero
  2.    pressure of the gas is zero
  3.    kinetic energy of the molecules is zero
  4.    specific heat of gas is zero
  5.    mass is zero.
 Discuss Question
Answer: Option C. -> kinetic energy of the molecules is zero



Question 694.
Which of the following laws is applicable for the behavior of a perfect gas
  1.    Boyle's law
  2.    Charles'law
  3.    Gay-Lussac law
  4.    all of the above
  5.    Joule's law.
 Discuss Question
Answer: Option D. -> all of the above



Question 695.

The degree of kinematic indeterminacy of a pin-jointed space frame is where j is number of joints and r is reaction components 


  1.    2j-r
  2.    3j-r
  3.    j-2r
  4.    j-3r
 Discuss Question
Answer: Option B. -> 3j-r



Question 696.

According to which law, all perfect gases change in volume by l/273th of
their original volume at `0^circ`C for every `1^circ`C change in temperature when
pressure remains constant


  1.    Joule's law
  2.    Boyle's law
  3.    Regnault's law
  4.    Gay-Lussac law
  5.    Charles' law
 Discuss Question
Answer: Option E. -> Charles' law



Question 697.

The term N.T.P. stands for


  1.    nominal temperature and pressure
  2.    natural temperature and pressure
  3.    normal temperature and pressure
  4.    normal thermodynamic practice
  5.    normal thermodynamic pressure.
 Discuss Question
Answer: Option C. -> normal temperature and pressure



Question 698.

Intensive property of a system is one whose value


  1.    depends on the mass of the system, like volume
  2.    does not depend on the mass of the system, like temperature, pressure, etc.
  3.    is not dependent on the path followed but on the state
  4.    is dependent on the path followed and not on the state
  5.    remains constant.
 Discuss Question
Answer: Option B. -> does not depend on the mass of the system, like temperature, pressure, etc.



Question 699.

According to GayLussac law for a perfect gas, the absolute pressure of given mass varies directly as


  1.    temperature
  2.    absolute
  3.    absolute temperature, if volume is kept constant
  4.    volume, if temperature is kept constant
  5.    remains constant,if volume and temperature are kept constant.
 Discuss Question
Answer: Option C. -> absolute temperature, if volume is kept constant



Question 700.

Kelvin Planck's law deals with


  1.    conservation of heat
  2.    conservation of work
  3.    conversion of heat into work
  4.    conversion fo work into heat
  5.    conservation of mass.
 Discuss Question
Answer: Option C. -> conversion of heat into work



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