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
Heat is added at constant temperature in an ideal ______________ cycle?
(A) Stirling
(B) Brayton
(C) Rankine
(D) None of these
A gas can be liquefied by pressure alone only, when its temperature is _____________ its critical temperature?
(A) Less than
(B) More than
(C) Equal to or higher than
(D) Less than or equal to
“If different processes are used to bring about the same chemical reaction, the enthalpy change is same for all of them”. This is ______________ law?
(A) Hess’s
(B) Kirchoff’s
(C) Lavoisier and Laplace
(D) None of these
Gibbs free energy of a pure fluid approaches _____________ as the pressure tends to zero at constant temperature?
(A) Infinity
(B) Minus infinity
(C) Zero
(D) None of these
The quantitative effect of temperature on chemical equilibrium is given by the____________________?
(A) Van’t-Hoff equation
(B) Le-Chatelier’s principle
(C) Arrhenius equation
(D) None of these
The ammonia synthesis reaction represented by N2 + 3H2 ⇌ 2NH3; ΔH = – 22.4 kcal, is__________________?
(A) Endothermic
(B) Exothermic
(C) Isothermal
(D) Adiabatic
Consider the reaction, C + O2 ⇌ CO2; ΔH = – 94 kcal. What will be the value of ΔH for the reaction CO2 → C + O2 ?
(A) -94 kcal
(B) +94 kcal
(C) > 94 kcal
(D) < -94 kcal
If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as__________________?
(A) Solubility increases as temperature increases
(B) Solubility increases as temperature decreases
(C) Solubility is independent of temperature
(D) Solubility increases or decreases with temperature depending on the Gibbs free energy change of solution