Question : Which of the following is correctly matched?

Option 1: Electric force - kilowatt minute

Option 2: Electric potential - kilowatt seconds

Option 3: Electric energy - kilowatt-hour

Option 4: Electric power - kilohour

Question : Select the option that expresses the given sentence in passive voice.
Let the experts emphasise the importance of renewable energy.

Option 1: Let the importance of renewable energy be emphasised by the experts.

Option 2: The importance of renewable energy let be emphasised by the experts.

Option 3: Let the importance of renewable energy is emphasised by the experts.

Option 4: The importance of renewable energy will be emphasised by the experts.

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

Option 1: ammeter

Option 2: hydrometer

Option 3: voltmeter

Option 4: thermocouple

Question : What is the primary source of energy in an ecosystem?

Option 1: Moonlight

Option 2: Sunlight

Option 3: Oxidation in plants

Option 4: The heat released during respiration

Question : The naturally occurring gas that is generated by the breakdown of organic matter by anaerobic bacteria and is used in energy production is called:

Option 1: Compressed Natural Gas

Option 2: Biogas

Option 3: Natural gas

Option 4: Liquified Petroleum Gas