A. Vapor to liquid
B. Vapor to solid
C. Solid to liquid
D. One allotropic form to another allotropic form
Related Mcqs:
- Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of______________?
A. Fusion
B. Vaporisation
C. Transition
D. None of these - 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 - The heat evolved in the combustion of benzene is represented by the equation: C6H6 + 7.5 O2 = 6CO2 + 3H2O, ΔH = 3264.6 kJ/kg. mole The heat energy change, when 39 gm of C6H6 is burnt in an open container, will be _____________ kJ/kgmole?
A. +816.15
B. +1632.3
C. -1632.3
D. -2448.45 - 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 - 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 - 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 - Internal energy is equal to the heat absorbed in case of a/an ______________ process?
A. Constant volume
B. Polytropic
C. Adiabatic
D. Constant pressure - The heat capacity of a substance is ____________________?
A. Greater for liquid state than for solid state
B. Lower for liquid state than for gaseous state
C. Higher for solid state than for liquid state
D. Equal for solid and liquid states below melting point - 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 - 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)
