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GS Paper IUPSC Prelims 1998
Health & Medicine
Question No. 290Interactive Test Mode
00:00
+2-0.66

Q290. One astronomical unit is the average distance between:

One astronomical unit is the average distance between:

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 1998 • Science and Technology

Correct Answer: Option (A) — Earth and the Sun

Concept & Option Breakdown

Standard Reference Verified

One Astronomical Unit (AU) is defined as the mean distance between the Earth and the Sun, approximately 149.6 million kilometers (1.496 × 10¹¹ m).

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 1998 (Q290)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (A) — Earth and the Sun

Related & Repeated Prelims PYQs (2)

Questions from other UPSC Prelims years testing the same or closely linked concept.

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2007 • Q985% Match

What is the average distance (approximate) between the sun and the earth?

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2008 • Q880% Match

In order of their distances from the Sun, which of the following planets lie between Mars and Uranus?

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Frequently Asked Questions — UPSC Prelims 1998 Q290

What is the official answer for UPSC Prelims 1998 GS Paper I Question 290 (Science and Technology)?

The official UPSC answer key for this 1998 Science and Technology (Health & Medicine) question is Option (A): "Earth and the Sun". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 1998 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?

To solve Health & Medicine questions in UPSC Prelims, identify extreme modifiers, verify core NCERT conceptual definitions, and eliminate mutually contradictory statement pairs before locking your final option.

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