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Q98 (CDS-II/2011) Science & Technology › New Materials, Energy & Environment-linked Tech › Renewable power systems Answer Verified

Renewable energy can be obtained from

Result
Your answer: —  Â·  Correct: C
Explanation

Renewable energy is derived from natural sources that are replenished at a higher rate than they are consumed [t1]. Biomass is a renewable energy resource derived from biological materials such as agricultural crops, timber by-products, animal waste, and organic municipal waste [c1][c3]. It is considered renewable because it is naturally replaced over short periods through the growth of living organisms [c4][t5]. In contrast, fossil fuels like coal, petroleum, and natural gas are non-renewable resources that take hundreds of millions of years to form and are depleted through use [t1][t9]. Similarly, nuclear energy utilizing radioactive elements is classified as a non-renewable or exhaustible resource because it relies on finite raw materials found in the Earth [c2][t4]. Therefore, among the given options, only biomass qualifies as a renewable energy source [c2][t6].

Sources

  1. [1] https://www.un.org/en/climatechange/what-is-renewable-energy
  2. [2] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 22: Renewable Energy > 22.6 BIOMASS > p. 292
  3. [3] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 22: Renewable Energy > Renewabte energy comprises of > p. 287
  4. [4] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 9: Distribution of World Natural Resources > Renewable Resource > p. 8
  5. [5] INDIA PEOPLE AND ECONOMY, TEXTBOOK IN GEOGRAPHY FOR CLASS XII (NCERT 2025 ed.) > Chapter 5: Mineral and Energy Resources > Non-Conventional Energy Sources > p. 61
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