Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of______________?

Related Mcqs:

1. Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of _____________________?

   A. Sublimation
   B. Fusion
   C. Transition
   D. Vaporisation

2. Heat of transition is the heat evolved or absorbed, when a substance is converted from_________________?

   A. Vapor to liquid
   B. Vapor to solid
   C. Solid to liquid
   D. One allotropic form to another allotropic form

3. 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

4. Heat requirement for decomposition of a compound into its elements is _____________ that is evolved during the formation of that compound from its elements?

   A. The same
   B. Less than
   C. Greater than
   D. Different than

5. Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The ratio of chemical potential to free energy of a pure substance at constant temperature and pressure is________________?

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

6. Internal energy is equal to the heat absorbed in case of a/an ______________ process?

   A. Constant volume
   B. Polytropic
   C. Adiabatic
   D. Constant pressure

7. The main type of sludge gas evolved during sewage treatment in Imhoff tank is___________________?

   A. CO2
   B. CH4
   C. CO
   D. H2

8. Solubility of a substance which dissolves with an increase in volume and liberation of heat will be favoured by the_______________?

   A. Low pressure and high temperature
   B. Low pressure and low temperature
   C. High pressure and low temperature
   D. High pressure and high temperature

9. Trouton’s ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K) ___________________?

   A. λb/Tb
   B. Tb/λb
   C. √(λb/Tb)
   D. √(Tb/λb)

10. Entropy of a substance remains constant during a/an ____________ change?

    A. Reversible isothermal
    B. Irreversible isothermal
    C. Reversible adiabatic
    D. None of these