Molar heat capacity of water in equilibrium with ice at constant pressure is __________ Kcal/kg mole . °K ∞ 50 100 TRUE ANSWER : ? YOUR ANSWER : ?
Standard temperature and pressure (S.T.P.) is 15°C and 750 mm Hg 15°C and 1 kgf/cm² 0°C and 1 kgf/cm² 0°C and 750 mm Hg TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is a widely used refrigerant in vapour compression refrigeration system (using large centrifugal compressor)? Ammonia Methyl chloride Freon Liquid sulphur dioxide TRUE ANSWER : ? YOUR ANSWER : ?
An isolated system can exchange __________ with its surroundings. Both matter and energy Matter Energy Neither matter nor energy TRUE ANSWER : ? YOUR ANSWER : ?
For an incompressible fluid, the __________ is a function of both pressure as well as temperature. All of these Internal energy Entropy Enthalpy TRUE ANSWER : ? YOUR ANSWER : ?
In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in Enhanced COP Increased or decreased COP ; depending upon the type of refrigerant No change in the value of COP Decreased COP TRUE ANSWER : ? YOUR ANSWER : ?
Near their critical temperatures, all gases occupy volumes __________ that of the ideal gas. Half Same as Less than More than TRUE ANSWER : ? YOUR ANSWER : ?
The ammonia synthesis reaction represented by N₂ + 3H₂ ⇋ 2NH₃ ; ΔH = - 22.4 kcal, is Endothermic Exothermic Adiabatic Isothermal TRUE ANSWER : ? YOUR ANSWER : ?
The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzman's constant, T = absolute temperature) √(2KT/m) √(6KT/m) √(3KT/m) 3KT/m TRUE ANSWER : ? YOUR ANSWER : ?
A system in which there is exchange of energy but not of mass, is called a/an __________ system. Closed Open Insulated Isolated TRUE ANSWER : ? YOUR ANSWER : ?