111. A thermoeletric refrigerator works on

1. 1. Joule effect

   
   
   

   2. Seebeck effect

   
   
   

   3. Peltier effect

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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112. In the electrolysis the amount of mass deposited or liberated at an electrode is directly proportional to

1. 1. Square of electric charge

   
   
   

   2. Amount of charge

   
   
   

   3. Square of current

   
   
   

   4. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: B

   N/A

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113. The temperature at which termoelectic power of a thermo couple becomes zero, is called

1. 1. Inversion temperature

   
   
   

   2. Neutral temperature

   
   
   

   3. Junction temperature

   
   
   

   4. Null temperature

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: B

   N/A

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114. The temperature at which a ferromagnetic material becomes paramagnetic, is called

1. 1. Critical temperature

   
   
   

   2. Inversion temperature

   
   
   

   3. Curie temperature

   
   
   

   4. Neutral temperature

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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115. The core of an electromagnet is made of soft iron because soft iron has

1. 1. Small susceptibility and small retentivity

   
   
   

   2. Large susceptibility and small retentivity

   
   
   

   3. Large density and large retentivity

   
   
   

   4. Small density and large retentivity

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: B

   N/A

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