Hess’s law of constant heat summation is based on conservation of mass. It deals with ___________________?

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

   A. dE = Tds – PdV
   B. dQ = CvdT + PdV
   C. dQ = CpdT + Vdp
   D. Tds = dE – PdV

4. In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is_______________?

   A. More
   B. Less
   C. Same
   D. Unpredictable; depends on the particular reaction

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

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

6. The variation of heat of reaction with temperature at constant pressure is given by the ____________ law?

   A. Kelvin’s
   B. Antoine’s
   C. Kirchoff’s
   D. None of these

7. First law of thermodynamics deals with the ___________________?

   A. Direction of energy transfer
   B. Reversible processes only
   C. Irreversible processes only
   D. None of these

8. The following heat engine produces power of 100,000 kW. The heat engine operates between 800 K and 300 K. It has a thermal efficiency equal to 50% of that of the Carnot engine for the same temperature. The rate at which heat is absorbed from the hot reservoir is____________________?

   A. 100,000 kW
   B. 160,000 kW
   C. 200,000 kW
   D. 320,000 kW

9. Dryness factor of steam is defined as the ratio of the mass of vapor in the mixture to the mass of the mixture. Dryness factor of steam is measured by a _______________ calorimeter ?

   A. Bomb
   B. Throttling
   C. Junker’s
   D. Boy’s

10. Dryness fraction of wet steam is defined as the ratio of mass of vapour in the mixture to the mass of mixture ______________ calorimeter is not used for measuring the dryness fraction of steam?

    A. Bomb
    B. Separating
    C. Bucket
    D. Throttling