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GS Paper IUPSC Prelims 2007
Health & Medicine
Question No. 254Interactive Test Mode
00:00
+2-0.66

Q254. Consider the following statements: 1. If magenta and yellow coloured circles intersect, the intersected area will have red colour. 2. If cyan and magenta coloured circles intersect, the intersected area will have blue colour. Which of the statements given above is/are correct?

Consider the following statements:

  1. If magenta and yellow coloured circles intersect, the intersected area will have red colour.
  2. If cyan and magenta coloured circles intersect, the intersected area will have blue colour.

Which of the statements given above is/are correct?

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 2007 • Science and Technology

Correct Answer: Option (C) — Both 1 and 2

Concept & Option Breakdown

Standard Reference Verified

In the subtractive color model (pigment mixing):

  • Cyan, magenta, and yellow are the primary subtractive colors.
  • Magenta absorbs green and reflects red and blue; yellow absorbs blue and reflects red and green. When magenta and yellow overlap, green and blue are absorbed, leaving red reflected (Statement 1 is correct).
  • Cyan absorbs red and reflects green and blue; magenta absorbs green and reflects red and blue. Overlapping cyan and magenta absorbs red and green, reflecting blue (Statement 2 is correct).
Elimination Heuristic & Exam Approach

Subtractive color rule: Cyan + Magenta = Blue; Magenta + Yellow = Red; Yellow + Cyan = Green.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2007 (Q254)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (C) — Both 1 and 2

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Frequently Asked Questions — UPSC Prelims 2007 Q254

What is the official answer for UPSC Prelims 2007 GS Paper I Question 254 (Science and Technology)?

The official UPSC answer key for this 2007 Science and Technology (Health & Medicine) question is Option (C): "Both 1 and 2". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2007 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?

Subtractive color rule: Cyan + Magenta = Blue; Magenta + Yellow = Red; Yellow + Cyan = Green.

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