On volume basis, air contains following parts of oxygen _____________________?

Related Mcqs:

1. On weight basis, air contains following parts of oxygen_________________?

   A. 21
   B. 23
   C. 25
   D. 73
   E. 79

2. 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

3. 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

4. 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

5. The basis for measuring thermodynamic property of temperature is given by___________________?

   A. zeroth law of thermodynamics
   B. first law of thermodynamics
   C. second law of thermodynamics
   D. third law of thermodynamics
   E. Avogadro’s hypothesis

6. To convert volumetric analysis to gravimetric analysis, the relative volume of each constituent of the flue gases is____________________?

   A. divided by its molecular weight
   B. multiplied by its molecular weight
   C. multiplied by its density
   D. multiplied by its specific weight
   E. divided by its specific weight

7. A heat exchange process in which the product of pressure and volume remains constant is known as_______________?

   A. heat exchange process
   B. throttling process
   C. isentropic process
   D. adiabatic process
   E. hyperbolic process

8. The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as_________________?

   A. Dual combustion cycle
   B. Diesel cycle
   C. Atkinson cycle
   D. Rankine cycle
   E. Stirling cycle

9. If a gas is heated against a pressure, keeping the volume constant, then work done will be equal to__________________?

   A. + v
   B. – ve
   C. zero
   D. pressure x volume
   E. any where between zero and infinity

10. The pressure’of a gas in terms of its mean kinetic energy per unit volume E is equal to________________?

    A. E/3
    B. E/2
    C. 3E/4
    D. 2E/3
    E. 5E/4