Environment, Ecosystems & Energy Sources

JKSSB Finance Accounts Assistant · General Science · 8 practice questions with answers and explanations: 3 Easy, 3 Medium, 2 Hard.

Sample questions

Sample Easy question 1

Which of these is a non-conventional (renewable) source of energy?

  1. Petroleum
  2. Natural gas
  3. Solar energy
  4. Coal
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Answer: C. Solar energy is a non-conventional, renewable source of energy, unlike fossil fuels such as petroleum, natural gas, and coal.

Sample Medium question 2

The Greenhouse Effect refers to the:

  1. Cooling of Earth due to excess oxygen
  2. Trapping of heat in Earth's atmosphere by gases like carbon dioxide
  3. Depletion of groundwater
  4. Formation of acid rain only
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Answer: B. The Greenhouse Effect is the process by which gases like carbon dioxide and methane trap heat in Earth's atmosphere, warming the planet.

Sample Hard question 3

Tidal energy is generated by harnessing the:

  1. Rise and fall of ocean tides caused by gravitational forces
  2. Heat from within the Earth's crust
  3. Combustion of fossil fuels
  4. Splitting of atomic nuclei
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Answer: A. Tidal energy harnesses the natural rise and fall of ocean tides, caused mainly by the gravitational pull of the moon and sun.

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