Question : The  process of photosynthesis involves conversion of 

Option 1: chemical energy into radiant energy

Option 2: chemical energy into mechanical energy

Option 3: solar energy into chemical energy

Option 4: mechanical energy into solar energy

Question : What type of energy conversion takes place in a battery?

Option 1: Chemical energy into light energy

Option 2: Chemical energy into electrical energy

Option 3: Mechanical energy into chemical energy

Option 4: Chemical energy into sound energy

Question : dynamo is a device for converting 

Option 1: heat energy into electrical energy

Option 2: mechanical energy into electrical energy

Option 3: megnetic energy into electrical energy

Option 4: chemical energy into electrical energy

Question : Conversion of heat into electrical energy is achieved by using:

Option 1: ammeter

Option 2: hydrometer

Option 3: voltmeter

Option 4: thermocouple

Question : An atom of an element has an atomic number of 17 and a mass of 36. The number of neutrons in its nucleus is

Option 1: 17

Option 2: 19

Option 3: 36

Option 4: 53