• 96.6 J
• 124 J
• 198.8 J
• 215.4 J

• 41.90 J/kcal
• 4190 J/cal
• 4.19 J/kcal
• 4.19 J/cal
• #### 3.  For a gas, the r.m.s. speed at 800K is

• Half the value at 200 K
• Double the value at 200 K
• Same as at 200 K
• Four times the value at 200 K
• #### 4.  The specific heat of a gas

• Has only one value
• Has two values CP and CV
• Is proportional to the square root of its absolute temperature
• Can have any value between 0 and infinity
• #### 5.  Average kinetic energy of molecules is

• Directly proportional to square root of temperature
• Directly proportional to absolute temperature
• Independent of absolute temperature
• Inversely proportional to absolute temperature

• 357°C
• 457°C
• 547°C
• 820°C
• #### 7.  Following gases are kept at the same temperature. Which gas possesses maximum r.m.s. speed?

• Oxygen
• Nitrogen
• Hydrogen
• Carbon dioxide

• J kg/°c
• J/kg°c
• kg°c/J
• J kg/°c²
• #### 9.  According to kinetic theory of gases, at absolute zero of temperature

• Water freezes
• Liquid helium freezes
• Molecular motion stops
• Liquid hydrogen freezes
• #### 10.  The average kinetic energy of the molecules of a gas at 27°C is 9 10-20 J. what is its average K.E. at 227°C?

• 5 10-20 J
• 10 10-20 J
• 15 10-20 J
• 20 10-20 J
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