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MCQs

Laws Of Thermodynamics

Total Questions : 1462 | Page 146 of 147 pages
Question 1451. The pressure’of a gas in terms of its mean kinetic energy per unit volume E is equal to________________?
  1.    E/3
  2.    E/2
  3.    3E/4
  4.    2E/3
  5.    5E/4
 Discuss Question
Answer: Option D. -> 2E/3
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1452. 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
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1453. A closed system is one in which_________________________?
  1.    mass does not cross boundaries of the system, though energy may do so
  2.    mass crosses the boundary but not the energy
  3.    neither mass nor energy crosses the boundaries of the system
  4.    both energy and mass cross the boundaries of the system
  5.    thermodynamic reactions take place
 Discuss Question
Answer: Option A. -> mass does not cross boundaries of the system, though energy may do so
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1454. Which of the following can be regarded as gas so that gas laws could be applicable, within the commonly encountered temperature limits ?
  1.    02, N2, steam, C02
  2.    Oz, N2, water vapour
  3.    S02, NH3, C02, moisture
  4.    02, N2, H2, air
  5.    steam vapours, H2, C02
 Discuss Question
Answer: Option D. -> 02, N2, H2, air
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1455. General gas equation is____________________?
  1.    PV=nRT
  2.    PV=mRT
  3.    PV = C
  4.    PV=KiRT
  5.    Cp-Cv = Wj
 Discuss Question
Answer: Option B. -> PV=mRT
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1456. The unit of time in S.I. units is__________________?
  1.    second
  2.    minute
  3.    hour
  4.    day
  5.    year
 Discuss Question
Answer: Option A. -> second
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1457. The unit of length in S.I. units is________________?
  1.    meter
  2.    centimeter
  3.    kilometer
  4.    millimeter
 Discuss Question
Answer: Option A. -> meter
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1458. According to Gay-Lussac 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
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1459. 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
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1460. Atmospheric pressure is equal to____________?
  1.    1.013 bar
  2.    760mm of Hg
  3.    101.3KN/m2
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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