The condition of perfect vacuum, i.e., absolute zero pressure can be attained at ____________________?

Related Mcqs:

1. According to kinetic theory of gases, the absolute zero temperature is attained when___________________?

   A. volume of the gas is zero
   B. pressure of the gas is zero
   C. kinetic energy of the molecules is zero
   D. specific heat of gas is zero
   E. mass is zero

2. According to Gay-Lussac law for a perfect gas, the absolute pressure of given mass varies directly as____________________?

   A. temperature
   B. absolute
   C. absolute temperature, if volume is kept constant
   D. volume, if temperature is kept constant
   E. remains constant,if volume and temperature are kept constant

3. Absolute zero pressure will occur _____________________?

   A. at sea level
   B. at the center of the earth
   C. when molecular momentum of the system becomes zero
   D. under vacuum conditions
   E. at a temperature of – 273 °K

4. According to which law, all perfect gases change in volume by l/273th of their original volume at 0°C for every 1°C change in temperature when pressure remains constant ____________________?

   A. Joule’s law
   B. Boyle’s law
   C. Regnault’s law
   D. Gay-Lussac law
   E. Charles’ law

5. Molecular volume of any perfect gas at 600 x 103 N/m2 and 27°C will be ____________________?

   A. 4.17m3/kgmol
   B. 400 m3/kg mol
   C. 0.15 m3/kg mol
   D. 41.7 m3/kg mol
   E. 417m3/kgmol

6. A perfect gas at 27°C is heated at constant pressure till its volume is double. The final temperature is________________?

   A. 54°C
   B. 327°C
   C. 108°C
   D. 654°C
   E. 600°C

7. 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

8. Which of the following laws is applicable for the behavior of a perfect gas__________________?

   A. Boyle’s law
   B. Charles’law
   C. Gay-Lussac law
   D. all of the above
   E. Joule’s law

9. Which of the following variables controls the physical properties of a perfect gas_________________?

   A. pressure
   B. temperature
   C. volume
   D. all of the above
   E. atomic mass

10. One barometric pressure or 1 atmospheric pressure is equal to___________________?

    A. 1 kgf/cnr2
    B. 1.033 kgf/cm2
    C. 0 kgf/cm2
    D. 1.0197 kgf/cm2
    E. 100 kgf/cm2