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GS Paper IUPSC Prelims 2010
Health & Medicine
Question No. 371Interactive Test Mode
00:00
+2-0.66

Q371. Given below are the names of four energy crops. Which one of them can be cultivated for ethanol?

Given below are the names of four energy crops. Which one of them can be cultivated for ethanol?

Select the correct option below (or cross out options to eliminate)
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Official Answer Key & Detailed Solution

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Official UPSC Answer KeyUPSC Prelims 2010 • Science and Technology

Correct Answer: Option (B) — Maize

Concept & Option Breakdown

Standard Reference Verified

Maize (corn) is rich in starch, which can be hydrolyzed into fermentable sugars and fermented by yeast to produce bioethanol. Jatropha, Pongamia, and Sunflower are oilseed crops used for biodiesel or edible vegetable oil extraction.

Elimination Heuristic & Exam Approach

Ethanol is produced from sugar/starch fermentation (sugarcane, maize, cassava, broken rice), whereas biodiesel comes from oilseeds (Jatropha, Pongamia).

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2010 (Q371)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (B) — Maize

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Frequently Asked Questions — UPSC Prelims 2010 Q371

What is the official answer for UPSC Prelims 2010 GS Paper I Question 371 (Science and Technology)?

The official UPSC answer key for this 2010 Science and Technology (Health & Medicine) question is Option (B): "Maize". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2010 question belong to?

This question belongs to GS Paper I under the subject "Science and Technology" and micro-topic "Health & Medicine". You can explore all repeated questions from Health & Medicine in Acme AI's 3D Prelims PYQ Realm or practice 50 full-length and sectional tests in the APT Prelims Test Series.

How can I solve this Health & Medicine UPSC Prelims question using option elimination?

Ethanol is produced from sugar/starch fermentation (sugarcane, maize, cassava, broken rice), whereas biodiesel comes from oilseeds (Jatropha, Pongamia).

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