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GS Paper IUPSC Prelims 2004
Health & Medicine
Question No. 322Interactive Test Mode
00:00
+2-0.66

Q322. Salts of which of the following elements provide colours to fireworks?

Salts of which of the following elements provide colours to fireworks?

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 2004 • Science and Technology

Correct Answer: Option (C) — Strontium and barium

Concept & Option Breakdown

Standard Reference Verified

Salts of strontium (such as strontium carbonate or strontium nitrate) emit a brilliant crimson/red light, while barium salts (such as barium nitrate or barium chloride) impart a green colour in fireworks and pyrotechnics.

Elimination Heuristic & Exam Approach

Remember standard flame test colours: Strontium = Red/Crimson, Barium = Apple Green, Sodium = Yellow, Copper = Blue/Green.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2004 (Q322)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (C) — Strontium and barium

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Frequently Asked Questions — UPSC Prelims 2004 Q322

What is the official answer for UPSC Prelims 2004 GS Paper I Question 322 (Science and Technology)?

The official UPSC answer key for this 2004 Science and Technology (Health & Medicine) question is Option (C): "Strontium and barium". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2004 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?

Remember standard flame test colours: Strontium = Red/Crimson, Barium = Apple Green, Sodium = Yellow, Copper = Blue/Green.

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Previous QuestionConsider the following statements: 1. Baking soda is used in fire extinguishers. 2. Quick lime is used in the manufacture of glass. 3. Gypsum is used in the manufacture of plaster of Paris. Which of the statements given above is/are correct?
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