IIT JEE Questions And Answers :: Heat And Thermodynamics: part1

IIT JEE : Heat And Thermodynamics QUESTIONS AND ANSWERS :: part1 : 1 to 5

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2014 examinations :

1.When a metal rod is heated it expands because:

the size of its atoms increases
the distance among its atoms increases
atmospheric air rushes into it
the actual cause is still unknown

2.Two vessels having equal volume contain molecular hydrogen at one atmosphere and helium at two atmospheres respectively. If both samples are at the same temperature the mean velocity of hydrogen molecules is:

equal to that of helium
twice that of helium
half that of helium
v2 times that of helium

3.At a certain temperature, hydrogen molecules have rms velocity 2 km/s. The rms velocity of the oxygen molecules at the same temperature is:

2 km/s
8 km/s
0.5 km/s
1 km/s

4.If the heat of 110 J is added to a gaseous system and change in internal energy is 40 J, then the amount of external work done is:

140 J
70 J
110 J
150 J

5.The internal energy U is a unique function of any state because change in U:

does not depend upon path
depend upon path
corresponds to an adiabatic process
corresponds to an isothermal process

More Heat And Thermodynamics QUESTIONS AND ANSWERS available in next pages

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