6. The device which converts chemical energy of fuels directly into electrical energy is

1. 1. Concentration cell

   
   
   

   2. Galvanic cell

   
   
   

   3. Fuel cell

   
   
   

   4. Both (b) and (c)

   
   
   

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   NA

   Correct Option: C

   NA

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7. Quantity of electricity is measured in

1. 1. Ampere second

   
   
   

   2. Ampere

   
   
   

   3. Ampere second^-1

   
   
   

   4. Ampere^-1 second

   
   
   

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   NA

   Correct Option: A

   NA

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8. Use of electrolysis is

1. 1. Electroplating

   
   
   

   2. Electrorefining

   
   
   

   3. Both (a) and (b)

   
   
   

   4. None of these

   
   
   

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   NA

   Correct Option: C

   NA

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9. Corrosion is basically an

1. 1. interaction

   
   
   

   2. union between two light metals and a heavy metal

   
   
   

   3. altered reaction in presence of H₂O

   
   
   

   4. electrochemical phenomenon

   
   
   

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   NA

   Correct Option: D

   NA

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10. For which of the following cells, the standard cell voltage is zero ?

1. 1. Electrolytic cell

   
   
   

   2. Concentration cell

   
   
   

   3. Daniel cell

   
   
   

   4. Fuel cell

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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