The variables which control the physical properties of a perfect gas are All of these Temperature of the gas Volume occupied by the gas Pressure exerted by the gas TRUE ANSWER : ? YOUR ANSWER : ?
Carbonization of coal consists of Heating the wood with a limited supply of air to temperature not less than 280°C Moulding the finely ground coal under pressure with or without a binding material None of these Drying and crushing the coal to a fine powder TRUE ANSWER : ? YOUR ANSWER : ?
Superheated vapour behaves As steam As ordinary vapour Exactly as gas Approximately as a gas TRUE ANSWER : ? YOUR ANSWER : ?
One kg of carbon requires 4/3 kg of oxygen and produces ________ kg of carbon monoxide gas. 44138 44046 44142 44015 TRUE ANSWER : ? YOUR ANSWER : ?
A closed system is one in which Mass does not cross boundaries of the system, though energy may do so Both energy and mass cross the boundaries of the system Neither mass nor energy crosses the boundaries of the system Mass crosses the boundary but not the energy TRUE ANSWER : ? YOUR ANSWER : ?
Change in enthalpy of a system is the heat supplied at Constant temperature Constant pressure Constant entropy Constant volume TRUE ANSWER : ? YOUR ANSWER : ?
One kg of carbon produces ___ kg of carbon dioxide. 11/7 3/7 11/3 4/11 TRUE ANSWER : ? YOUR ANSWER : ?
Boyle's law i.e. pV = constant is applicable to gases under Steady change of pressures High range of pressures All ranges of pressures Only small range of pressures TRUE ANSWER : ? YOUR ANSWER : ?
One kg of hydrogen requires 8 kg of oxygen and produces 7 kg of water 9 kg of water 1 kg of water 8 kg of water TRUE ANSWER : ? YOUR ANSWER : ?