6. The SI unit of mechanical equivalent of heat is

1. 1. joules-calorie

   
   
   

   2. Joules/calorie

   
   
   

   3. Calorie-ergs

   
   
   

   4. Ergs / calorie

   
   
   

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   N/A

   Correct Option: B

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7. The amount of heat required to raise the temperature of a body through 1 K is called its

1. 1. Thermal capacity

   
   
   

   2. Entropy

   
   
   

   3. Specific heat

   
   
   

   4. Water equivalent

   
   
   

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   N/A

   Correct Option: A

   N/A

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8. A sample of gas expands from volume V₁ to V₂ The amount of work done by the gas is greatest when the expansion is

1. 1. Iso-thermal

   
   
   

   2. Isobaric

   
   
   

   3. Adiabatic

   
   
   

   4. Equal in all cases

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: B

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9. Specific heat of a metal at very low temperatures varies as

1. 1. T

   
   
   

   2. T²

   
   
   

   3. T^3/2

   
   
   

   4. T³

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: A

   N/A

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10. If a graph is plotted taking the temperature in fahrenheit along the Y-axis and the corresponding temperature in celsius along X-axis it will be straight line

1. 1. Having a positive intercept on the Y-axis

   
   
   

   2. Having a positive intercept on X-axis

   
   
   

   3. Passing through origin

   
   
   

   4. Having negative intercepts on both the axes

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: A

   N/A

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