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UPSC 2010: Given below are the names of four energy crops. Which one of them can be cultivated for ethanol ?
(a)Jatropha
(b)Maize
(c)Pongamia
(d)Sunflower
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Not attemptedCorrect Answer: (b) Maize
Ethanol is commercially produced from starch-rich grain crops; in India and worldwide, maize (corn) is the principal feedstock because its kernels are ~60 % starch that can be hydrolysed and fermented. Jatropha, Pongamia and sunflower are oil-seed crops suited to biodiesel, not ethanol. Therefore maize is the correct energy crop for ethanol cultivation([iasexamportal.com](https://iasexamportal.com/Answer-Key/General-Studies-Solution-CSP-2010)).
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Frequently Asked Questions
What is the correct answer to this UPSC 2010 Environment & Ecology question?▼
The correct answer is option (b): Maize. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Renewable Energy & Green Technologies question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2010, GS Paper 1, as Question 63. It falls under Environment & Ecology > Renewable Energy & Green Technologies.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Renewable Energy & Green Technologies?▼
UPSC has asked 18 questions from Renewable Energy & Green Technologies (under Environment & Ecology) across multiple years. Visit the topic page to see the full list and year-wise trends.