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 : 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 : Which one of the following is not a non-conventional source of energy?

Option 1: Solar energy

Option 2: Natural gas

Option 3: Wind energy

Option 4: Tidal power

Question : The device used to convert solar energy into electricity is:

Option 1: Photovoltaic cell

Option 2: Daniel cell

Option 3: Electrochemical cell

Option 4: Galvanic cell

Question : What powers the Earth's internal heat engine?

Option 1: Solar Energy

Option 2: Volcanoes

Option 3: Radioactive energy

Option 4: Tides