Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system of constant mass ?

Related Mcqs:

1. 1st law of thermodynamics is nothing but the law of conservation of___________________?

   A. Momentum
   B. Mass
   C. Energy
   D. None of these

2. The first law of thermodynamics is a restatement of the law of conservation of_________________?

   A. Mass
   B. Energy
   C. Momentum
   D. None of these

3. Third law of thermodynamics is concerned with the__________________?

   A. Value of absolute entropy
   B. Energy transfer
   C. Direction of energy transfer
   D. None of these

4. Third law of thermodynamics is helpful in___________________?

   A. Prediction of the extent of a chemical reaction
   B. Calculating absolute entropies of substances at different temperature
   C. Evaluating entropy changes of chemical reaction
   D. Both B. and C.

5. The first law of thermodynamics is a statement of conservation of_____________________?

   A. Heat
   B. Momentum
   C. Energy
   D. Work

6. Measurement of thermodynamic property of temperature is facilitated by ____________ law of thermodynamics?

   A. 1st
   B. Zeroth
   C. 3rd
   D. None of these

7. Which law of the thermodynamics provides basis for measuring the thermodynamic property ?

   A. First law
   B. Zeroth law
   C. Third law
   D. Second law

8. Second law of thermodynamics is concerned with the_________________?

   A. Amount of energy transferred
   B. Direction of energy transfer
   C. Irreversible processes only
   D. Non-cyclic processes only

9. Fundamental principle of refrigeration is based on the ______________ law of thermodynamics?

   A. Zeroth
   B. First
   C. Second
   D. Third

10. _____________ law of thermodynamics ascertains the direction of a particular spontaneous process?

    A. Zeroth
    B. First
    C. Second
    D. Third