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GS Paper IUPSC Prelims 1996
Health & Medicine
Question No. 313Interactive Test Mode
00:00
+2-0.66

Q313. The alpha particle carries two positive charges. Its mass is very nearly equal to that of:

The alpha particle carries two positive charges. Its mass is very nearly equal to that 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 1996 • Science and Technology

Correct Answer: Option (B) — an atom of helium

Concept & Option Breakdown

Standard Reference Verified

An alpha particle is a helium nucleus (⁴He²⁺), consisting of two protons and two neutrons bound together. Since the mass of two orbital electrons is negligible compared to nucleon mass, the mass of an alpha particle is almost exactly equal to that of a neutral helium atom.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 1996 (Q313)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (B) — an atom of helium

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Frequently Asked Questions — UPSC Prelims 1996 Q313

What is the official answer for UPSC Prelims 1996 GS Paper I Question 313 (Science and Technology)?

The official UPSC answer key for this 1996 Science and Technology (Health & Medicine) question is Option (B): "an atom of helium". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 1996 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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