[{"id":211212,"question":"The expression PV/KT represents.","choices":[{"text":"Number of moles of the gas","value":"A"},{"text":"Number of molecules in the gas","value":"B"},{"text":"Total mass of the gas","value":"C"},{"text":"Density of the gas","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":211211,"question":"If pressure and temperature of an ideal gas is doubled and volume is halved, the number of the gas molecules.","choices":[{"text":"Become half","value":"A"},{"text":"Remain constant","value":"B"},{"text":"Become double","value":"C"},{"text":"Become three times","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":211210,"question":"If the specific latent heat of vaporization of oxygen is 214 kJ kg-1 how much heat will be absorbed when 3.0 kg of oxygen is boiled off at its boiling point.","choices":[{"text":"14 kJ","value":"A"},{"text":"64 k J","value":"B"},{"text":"140 kJ","value":"C"},{"text":"642 k j","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":211209,"question":"When a solid is melting the temperature remains constant even through heat is being supplied because the","choices":[{"text":"Heat is being used to break up the intermolecular bonds","value":"A"},{"text":"Solid is not absorbing any heat","value":"B"},{"text":"Molecules are moving faster","value":"C"},{"text":"Molecules are farther a part","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":211208,"question":"During solid ficain the temperature.","choices":[{"text":"Remains constant at the freezing point","value":"A"},{"text":"Increases at the freezing point","value":"B"},{"text":"Decreases at the freezing point","value":"C"},{"text":"Decreases at the melting point","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":211207,"question":"The law of equation of energy is applicable to the system whose constituents are.","choices":[{"text":"At rest","value":"A"},{"text":"In orderly motion","value":"B"},{"text":"in random motion","value":"C"},{"text":"Moving at constant speed","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":211206,"question":"What is the triple point of water.","choices":[{"text":"273 .15 K","value":"A"},{"text":"0 K","value":"B"},{"text":"100 K","value":"C"},{"text":"0 oC","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":211205,"question":"On which of the following the kinetic theory of gases is not applicable.","choices":[{"text":"Water vapour","value":"A"},{"text":"Smoke particles","value":"B"},{"text":"Bound particles","value":"C"},{"text":"Free electrons","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211204,"question":"If the gas pressure is increased then its mean free path becomes.","choices":[{"text":"More","value":"A"},{"text":"Zero","value":"B"},{"text":"Infinite","value":"C"},{"text":"Less","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":211203,"question":"Below which temperature gas can be liquified by increasing its pressure.","choices":[{"text":"Natural temperature","value":"A"},{"text":"Boyle temperature","value":"B"},{"text":"Critical temperature","value":"C"},{"text":"Absolute zero","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211202,"question":"If the number of gas molecules in a cubical vessel is increase from N to 3 N then its pressure and total energy will be.","choices":[{"text":"Half","value":"A"},{"text":"Three times","value":"B"},{"text":"Double","value":"C"},{"text":"Four times","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":211201,"question":"The highest efficiency of a heat engine whose low temperature is 17 oC and the high temperature of 200 oC is.","choices":[{"text":"20%","value":"A"},{"text":"30%","value":"B"},{"text":"35%","value":"C"},{"text":"40%","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211200,"question":"What is the internal energy of a mono atomic ideal gas.","choices":[{"text":"Potential only","value":"A"},{"text":"Parity kinetic and parity potential","value":"B"},{"text":"Kinetic only","value":"C"},{"text":"Neither kinetic nor potential","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211199,"question":"In the gas equation PV =nRT , V is the volume of.","choices":[{"text":"1 g of gas","value":"A"},{"text":"1 L of gas","value":"B"},{"text":"1 mol of gas","value":"C"},{"text":"1 kg of gas","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211198,"question":"The gas temperature is increased from 27 <sup>o</sup>C to 127 <sup>o</sup>C What is the ratio of mean kinetic energies.","choices":[{"text":"3/4","value":"A"},{"text":"4/3","value":"B"},{"text":"9/10","value":"C"},{"text":"10/9","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":211197,"question":"The heat required to sublime one mole of the substance at standard temperature and pressure is called.","choices":[{"text":"Latest heat","value":"A"},{"text":"Specific heat","value":"B"},{"text":"Heat of sublimation","value":"C"},{"text":"Heat capacity","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211196,"question":"Mean free path in a gas is the","choices":[{"text":"Distance travelled by a molecule before hitting a wall","value":"A"},{"text":"Average distance travelled by a molecule in one second","value":"B"},{"text":"Average distance travelled between molecules between any two successive collisions","value":"C"},{"text":"Root mean square velocity","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211195,"question":"The gas thermometer is taken as the primary standard because.","choices":[{"text":"Thermometers are easily reproducible","value":"A"},{"text":"Readings can be accurately taken","value":"B"},{"text":"No correction are necessary","value":"C"},{"text":"It produces he thermodynamic scale","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":211194,"question":"A standard fixed point for calibrating a thermometer is.","choices":[{"text":"Boiling point of water","value":"A"},{"text":"Melting point of ice","value":"B"},{"text":"Temperature of steam","value":"C"},{"text":"Triple point of water","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":211193,"question":"In general work done on or by a gas depends on.","choices":[{"text":"The initial state only","value":"A"},{"text":"The final state only","value":"B"},{"text":"The initial and final states","value":"C"},{"text":"The initial state the final state and the path","value":"D"},{"value":"E"}],"correctAnswer":4}]