Internal energy of a gas obeying Van-Der-Waals equation of state, [p + (a/v2)] (V – b) = RT, depends upon its___________________?

Related Mcqs:

1. Work required for compression of a gas contained in a cylinder is 7000 kJ. During compression, heat interaction of 3000 kJ causes the surroundings to be heated. Internal energy change of the gas during the compression is __________________ kJ ?

   A. +4000
   B. -4000
   C. 10000
   D. -10000

2. Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas) ?

   A. √T
   B. 1/√P
   C. √y
   D. 1/√ρ

3. The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding _______________ grinding wheel is normally used ?

   A. Hard
   B. Soft
   C. Silicon carbide
   D. Aluminium oxide

4. Maximum hardenability of steel depends upon its_______________________?

   A. Chemical composition
   B. Carbon content
   C. Grain size
   D. Alloying elements content

5. Diffusion co-efficient of a metal in a solid solution depends upon its ?

   A. Composition
   B. Temperature
   C. Both A. & B.
   D. Neither A. nor B.

6. Direct conversion of thermal energy to electrical energy is facilitated by the____________________?

   A. Fuel cells
   B. Photo voltaic cell
   C. Magneto hydrodynamic generator
   D. None of these

7. A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its_______________?

   A. Aqueous tension
   B. Saturated humidity
   C. Vapor pressure
   D. Absolute humidity

8. Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil, N2 = 80%. This flue gas composition indicates that_________________?

   A. Pure oxygen has been used for combustion
   B. Nitrogen percentage in the fuel is very high
   C. Excess air has been used for combustion
   D. Hydrogen is not present in the fuel

9. The pressure outside a bubble/droplet of liquid is ________________ the internal pressure?

   A. Greater than
   B. Less than
   C. Equal to
   D. Unpredictable; depends on the bubble size

10. Thermal efficiency of an internal combustion engine is around ______________ percent?

    A. 8
    B. 35
    C. 65
    D. 80