A solar water heater can’t be used to get hot water on

One atomic mass unit is equal to

Which of the following is not an example of a bio- mass energy source?

Bio-gas contain methane up to ____.

Which of the following is a renewable source of energy?

The hydrogen bomb is based on___.

Which of the following is a non-renewable source of energy?

The full form of CNG in the petroleum industry is

Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun’s energy?

An ideal source of energy should have

Which of the following radiations are harmful to the living organisms?

Solar panels are made of

The use of reflector in the solar cooker is to

Which type of coal has the highest carbon?

Which of the following is the main constituent of CNG?