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UPSC 2000: Consider the following features of newer models of motor cars: I. Radial tyres II. Streamlined body III. Multipoint fuel injection IV. Catalytic converter with exhaust Which of these features make the newer models of motor cars more fuel-efficient?
(a)I and II
(b)II and III
(c)III and IV
(d)I, III and IV
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Not attemptedCorrect Answer: (b) II and III
A streamlined body (II) decreases aerodynamic drag, and multipoint fuel injection (III) meters fuel more precisely, improving combustion efficiency—both directly lower fuel consumption. Radial tyres reduce wear but have only marginal effect on mileage, while catalytic converters primarily curb emissions rather than fuel use. Hence only II and III matter for fuel efficiency. ([licchavilyceum.com](https://licchavilyceum.com/upsc-civil-services-prelims-2000-solved-question-paper/))
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Frequently Asked Questions
What is the correct answer to this UPSC 2000 Science & Technology question?▼
The correct answer is option (b): II and III. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Energy & Environment question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2000, GS Paper 1, as Question 99. It falls under Science & Technology > Energy & Environment.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Energy & Environment?▼
UPSC has asked 48 questions from Energy & Environment (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.