Tag: substances, objects and energy

Questions Related to substances, objects and energy

Which of the following substances is smokeless?

  1. Charcoal

  2. Biogas and LPG

  3. Coke

  4. All of these


Correct Option: D
Explanation:

Fuels that burns without smoke are also termed as smokeless fuels. Smokeless fuels include charcoal, liquid petroleum, biogas, coke and anthracite.

Producer gas is a mixture of.

  1. carbon monoxide and nitrogen gas

  2. carbon monoxide and hydrogen gas

  3. carbon monoxide and water vapor

  4. carbon monoxide and nitrous oxide


Correct Option: B

State whether the given statement is True or False :

Flowing water is a good source of energy. 

  1. True

  2. False


Correct Option: A
Explanation:

Flowing water is a good source of energy. It is available at many places and has great energy providing capability.

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

  1. Solar energy

  2. Wind energy

  3. Tidal energy

  4. Coal energy


Correct Option: D
Explanation:

Coal is a conventional source of energy.

If you could use any source of energy for heating your food, which one would you use?

  1. Methane gas

  2. Natural gas

  3. Petrol

  4. None


Correct Option: B
Explanation:

Out of the given energy sources, methane gas and petroleum are too highly combustible fuels to be used for domestic purposes. Natural gas is safer than the other two fuels and is less hazardous too.

Which of the following is potentially good source of energy?

  1. Solar energy

  2. Energy from coal

  3. Energy from petroleum products

  4. Energy from wood


Correct Option: A
Explanation:

Solar energy is potentially an excellent source of energy and if utilized properly, it can provide energy solutions for many generations to come.