[{"id":211332,"question":"The pressure necessary to liquify a gas at the critical temperature is called.","choices":[{"text":"Normal pressure","value":"A"},{"text":"Atmospheric pressure","value":"B"},{"text":"Critical pressure","value":"C"},{"text":"Liquid pressure","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211331,"question":"Absolute zero may be regarded as the temperature of which","choices":[{"text":"Water freezes","value":"A"},{"text":"All substances are solids","value":"B"},{"text":"All gases become liquids","value":"C"},{"text":"Molecular motioning a gas would ceases","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":211330,"question":"Certain gas are called permanent gases because.","choices":[{"text":"They cannot be liquified","value":"A"},{"text":"They are perfect gases","value":"B"},{"text":"The critical temperatures are low","value":"C"},{"text":"their boiling points are low","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211329,"question":"What is the mean free path in a gas.","choices":[{"text":"The distance travelled by a molecule before hitting a wall","value":"A"},{"text":"the average distance travelled by a molecule in one second","value":"B"},{"text":"the average distance travelled by molecules in one second","value":"C"},{"text":"The root mean square velocity","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211328,"question":"Which one of the following is an example of a reversible process.","choices":[{"text":"Work done against friction","value":"A"},{"text":"Heat produced by current","value":"B"},{"text":"Melting of ice","value":"C"},{"text":"See back effect","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211327,"question":"Which of the following is an example of an irreversible process.","choices":[{"text":"Isothermal and adiabatic process","value":"A"},{"text":"Melting of ice","value":"B"},{"text":"Work done against friction","value":"C"},{"text":"Pettier effect","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211326,"question":"Temperature of a system remains constant in","choices":[{"text":"Adiabatic process","value":"A"},{"text":"Isobaric process","value":"B"},{"text":"Isothermal process","value":"C"},{"text":"Isochoric process","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211325,"question":"The process is which volume of the system remains constant.","choices":[{"text":"Isobaric process","value":"A"},{"text":"Isochoric process","value":"B"},{"text":"Isothermal process","value":"C"},{"text":"Adiatatic process","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":211324,"question":"The process in which pressure of the system remains constant.","choices":[{"text":"Isothermal process","value":"A"},{"text":"Isochoric process","value":"B"},{"text":"Isobaric process","value":"C"},{"text":"Adiabatic process","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211323,"question":"The ration Cv/Cp = y for a diatomic gas like air is","choices":[{"text":"1.29","value":"A"},{"text":"1.30","value":"B"},{"text":"1.40","value":"C"},{"text":"1.67","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211322,"question":"Difference between Cp and Cv is equal to","choices":[{"text":"General gas constant","value":"A"},{"text":"Planck's conatant","value":"B"},{"text":"Molar gas constant","value":"C"},{"text":"Boltzmann's constant","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211321,"question":"Which kind of motion is exhibited by molecules of monoatomic gas.","choices":[{"text":"Rotatory","value":"A"},{"text":"Vibratory","value":"B"},{"text":"Translatory","value":"C"},{"text":"Random","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":211320,"question":"A fixed mass of an ideal gas absorbs 1000 J of heat and expands under a constant pressure of 20 kPa from a volume of 25 x 10-3 m3 to a volume 50 x 10-3 The change internal energy of the gas is.","choices":[{"text":"500 J","value":"A"},{"text":"1000 J","value":"B"},{"text":"-1000 J","value":"C"},{"text":"Zero","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":211319,"question":"What is the average K.E. of gas molecules at temperature equal to K.","choices":[{"text":"kt/3","value":"A"},{"text":"3/2 KT","value":"B"},{"text":"1/2 KT","value":"C"},{"text":"2/3 KT","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":211318,"question":"Temperature of a gas is related to.","choices":[{"text":"Total K.E. of the gas molecules","value":"A"},{"text":"The K.E. of the centre of mass of the gas","value":"B"},{"text":"The P.E. of the centre of mass of the gas","value":"C"},{"text":"Total K.E. of the molecules w.r.t the centre of mass of gas","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":211317,"question":"Mean free path of gas molecules is inversely proportional to its.","choices":[{"text":"Volume","value":"A"},{"text":"Pressure","value":"B"},{"text":"Temperature","value":"C"},{"text":"Weight","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":211316,"question":"Gases exert pressure on walls of the vessels because gas molecules.","choices":[{"text":"Possess momentum","value":"A"},{"text":"Have finite volume","value":"B"},{"text":"Collide with each other","value":"C"},{"text":"Obey gas laws","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":211315,"question":"The pressure of a goas is directly proportion to","choices":[{"text":"Mean velocity of the molecules","value":"A"},{"text":"Mean square velocity of the molecules","value":"B"},{"text":"Root mean square velocity of the molecules","value":"C"},{"text":"Instantaneous velocity of the molecules","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":211314,"question":"According to kinetic energy of gases one assumes that the collisions between the molecules are.","choices":[{"text":"Perfectly elastic","value":"A"},{"text":"Perfectly inelastic","value":"B"},{"text":"Partly elastic","value":"C"},{"text":"Partly inelastic","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":211313,"question":"Which following properties of molecules of a gas is same for all gases at a particular temperature.","choices":[{"text":"Momentum","value":"A"},{"text":"Mass","value":"B"},{"text":"velocity","value":"C"},{"text":"K.E.","value":"D"},{"value":"E"}],"correctAnswer":4}]