Pick out the wrong unit conversion of heat transfer rate. 1 BTU/ft².hr = 2.712 kcal/m².hr 1 kcal/hr= 1.163 Watt 1 kcal/m².hr = 0.3687 BTU/ft².hr = 1.163 Watt/m² 1 Watt = 1.163 kcal/hr TRUE ANSWER : ? YOUR ANSWER : ?
The unit of specific heat at constant pressure, Cp, in SI unit is J/kg°K J/m³°K W/m°K W/m²°C TRUE ANSWER : ? YOUR ANSWER : ?
Enthalpy of a vapor gas mixture may be increased by increasing the Temperature at constant humidity All of these Humidity at constant temperature Temperature and the humidity TRUE ANSWER : ? YOUR ANSWER : ?
The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. If, at a total pressure of one standard atm. exerted by the vapours of water and toluene, the mole fraction of water Xw in the vapour phase satisfies Xw = 1.0 0 < Xw < 0.5 Xw = 0.5 0.5 < Xw < 1.0 TRUE ANSWER : ? YOUR ANSWER : ?
The OH⁻ concentration in a solution having pH value 3 is 10-13 10-10 10-11 10-3 TRUE ANSWER : ? YOUR ANSWER : ?
Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is xB and the vapour pressures of benzene and water at these conditions are PvB and Pvw respectively. The partial pressure of benzene in air-vapour mixture is (Patm - Pvw)xB XB.PvB XB.Patm PvB TRUE ANSWER : ? YOUR ANSWER : ?
A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is 19206 J 13728 J 4576 J 12712 J TRUE ANSWER : ? YOUR ANSWER : ?
The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation Increases with pressure rise Decreases with increasing pressure Both B & C Becomes zero at the critical point TRUE ANSWER : ? YOUR ANSWER : ?
The value of (Cp - Cv)for a real gas obeying Vander Wall's equation is > R 0.5 R R < R TRUE ANSWER : ? YOUR ANSWER : ?
A saturated vapor on being compressed would Both A & B Neither A nor B Form wet steam Condense TRUE ANSWER : ? YOUR ANSWER : ?