Social Science (087) — CBSE Class 10 board question

There is a pressing need to use non-conventional energy sources because:

1. Depleting fossil fuels: Growing consumption has made the country increasingly dependent on coal, oil and gas, which are non-renewable and facing potential shortages.
2. Rising prices and energy insecurity: Rising prices of oil and gas create uncertainties about future energy supply, affecting national economic growth.
3. Environmental problems: Increasing use of fossil fuels causes serious environmental pollution.

Therefore, renewable sources like solar, wind, tidal and biomass energy must be promoted.

Source: Conservation of Energy Resources / Non-Conventional Sources of Energy, Chapter 5

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Examiners expect two or three distinct reasons for this 2-mark question. The key points are: (1) fossil fuels are finite and depleting, (2) rising prices/energy insecurity, and (3) environmental damage. You don't need all three — any two well-stated points earn full marks. Avoid writing a lengthy essay; crisp, numbered points work best here.