111. A body cools from 85° C to 80°C in 5 minutes. The time taken to cool from 80°C to 75°C is

1. 1. Less than 5 minutes

   
   
   

   2. More than 5 minutes

   
   
   

   3. 5 minutes

   
   
   

   4. None of these

   
   
   

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   N/A

   Correct Option: B

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112. Clear nights are colder than cloudy nights because of

1. 1. Conduction

   
   
   

   2. Condensation

   
   
   

   3. Radiation

   
   
   

   4. Isolation

   
   
   

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   N/A

   Correct Option: C

   N/A

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113. A body cools from 60° C to 50° C in 10 minutes when kept in air at 30° C. In the next 10 minutes its temperature will be

1. 1. Below 40° C

   
   
   

   2. 40° C

   
   
   

   3. Above 40° C

   
   
   

   4. Can not be predicted

   
   
   

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   N/A

   Correct Option: C

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114. If the atmospheric temperature and the due point are nearly equal then

1. 1. The relative humidity is 100%

   
   
   

   2. The relative humidity is zero

   
   
   

   3. The relative humidity is 50%

   
   
   

   4. None of the above

   
   
   

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   N/A

   Correct Option: A

   N/A

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115. 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

   N/A

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