Q1. The largest source of energy in India is
(a) Hydro-electric
(b) Solar
(c) Thermal
(d) Nuclear
(UPSC Prelims 1982)
Answer: (c)
Explanation: In 1982, thermal energy was the largest source of power generation in India, primarily derived from coal-fired plants. It played a dominant role due to abundant coal reserves, despite the growing interest in hydro and renewable sources.