Related Mcqs:

1. Increase in the entropy of a system represents the_____________________?

   A. Degradation of energy
   B. Decrease in system pressure
   C. Increase in the availability of energy
   D. Increase in the temperature

2. Exposure to _________________ accelerates the degradation of plastics?

   A. Ultraviolet radiation
   B. High atmospheric temperature
   C. High ambient temperature
   D. Damp atmosphere

3. What is the value of entropy at 273°K ?

   A. 0
   B. 1
   C. ∞
   D. None of these

4. Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing 50% B is_______________?

   A. R ln 2
   B. -R ln 2
   C. 3 R ln 2
   D. -3R ln 2

5. __________________ of air does not increase with increase in temperature?

   A. Density
   B. Thermal diffusivity
   C. Viscosity
   D. Thermal conductivity

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. Energy to be supplied to the radioactive nucleus for the emission of a neutron is ________________ MeV?

   A. 0.8
   B. 7.8
   C. 200
   D. 10000

8. For a spontaneous natural process at constant temperature and pressure, the free energy of the system always____________________?

   A. Increases
   B. Decreases
   C. Remain constant
   D. Increases to a maximum before decreasing

9. Tumbling is the process of improving the ________________ of the materials/parts ?

   A. Surface finish
   B. Fatigue limit
   C. Creep limit
   D. Surface cleanliness

10. Austempering process results in the formation of ________________ structure ?

    A. Martensitic
    B. Bainitic
    C. Carburised
    D. Stressed