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GS Paper IUPSC Prelims 2017
Space & ISRO
Question No. 108Interactive Test Mode
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+2-0.66

Q108. The terms ‘Event Horizon’, ‘Singularity’, ‘String Theory’ and ‘Standard Model’ are sometimes seen in the news in the context of

The terms ‘Event Horizon’, ‘Singularity’, ‘String Theory’ and ‘Standard Model’ are sometimes seen in the news in the context of

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 2017 • Science and Technology

Correct Answer: Option (A) — Observation and understanding of the Universe

Concept & Option Breakdown

Standard Reference Verified

Option A is correct:

  • Event Horizon is the boundary surrounding a black hole beyond which nothing can escape.
  • Singularity is a point of infinite density and curvature within a black hole or at the Big Bang.
  • String Theory is a theoretical physics framework describing fundamental particles as vibrating strings.
  • Standard Model is the fundamental physics theory classifying all known elementary particles and their fundamental interactions (excluding gravity). All these concepts pertain to astrophysics, cosmology, and fundamental physics aimed at understanding the Universe.
Elimination Heuristic & Exam Approach

Identify the broadest common thematic domain: Black holes (event horizon, singularity) and theoretical particle physics (string theory, standard model) pertain directly to understanding cosmic phenomena.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2017 (Q108)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Space & ISRO
Official Answer KeyOption (A) — Observation and understanding of the Universe

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Frequently Asked Questions — UPSC Prelims 2017 Q108

What is the official answer for UPSC Prelims 2017 GS Paper I Question 108 (Science and Technology)?

The official UPSC answer key for this 2017 Science and Technology (Space & ISRO) question is Option (A): "Observation and understanding of the Universe". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2017 question belong to?

This question belongs to GS Paper I under the subject "Science and Technology" and micro-topic "Space & ISRO". You can explore all repeated questions from Space & ISRO 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 Space & ISRO UPSC Prelims question using option elimination?

Identify the broadest common thematic domain: Black holes (event horizon, singularity) and theoretical particle physics (string theory, standard model) pertain directly to understanding cosmic phenomena.

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