Acme Ai
A
अ
GS Paper IUPSC Prelims 2007
Health & Medicine
Question No. 317Interactive Test Mode
00:00
+2-0.66

Q317. Which one of the following non-metals is not a poor conductor of electricity?

Which one of the following non-metals is not a poor conductor of electricity?

Select the correct option below (or cross out options to eliminate)
PrevNext Question

Official Answer Key & Detailed Solution

3D PYQ Realm

Ready to check the official UPSC Answer Key?

Click any option above to test yourself under exam conditions, or reveal the explanation directly.

Official UPSC Answer KeyUPSC Prelims 2007 • Science and Technology

Correct Answer: Option (B) — Selenium

Concept & Option Breakdown

Standard Reference Verified

Selenium is a metalloid/semiconductor with significant photoconductivity—its electrical conductivity increases dramatically upon exposure to light. As a semiconductor, it conducts electricity substantially better than non-metallic insulators like sulphur, bromine, or phosphorus.

Reviewed by Avinash Sir & Acme AI Research Team

Practice Full-Length & Sectional Prelims Mocks on this Interface

50 simulated tests in the APT Prelims Test Series (₹1,493) or 1-on-1 Mentorship with Avinash Sir.

1-on-1 MentorshipOpen Test Platform

Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2007 (Q317)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (B) — Selenium

More PYQs from Science and Technology (Health & Medicine)

Master the Science and Technology syllabus cluster by practicing these related previous year questions.

View All Science and Technology PYQs
2008 • Q314Health & Medicine

What are Rubies and Sapphires chemically known as?

Science and TechnologyPractice
2008 • Q315Health & Medicine

Which one of the following is also called Stranger Gas?

Science and TechnologyPractice
2008 • Q316Health & Medicine

Which one of the following pairs of metals constitutes the lightest metal and the heaviest metal, respectively?

Science and TechnologyPractice
2007 • Q318Health & Medicine

Which one among the following is called philosopher’s wool?

Science and TechnologyPractice
2007 • Q319Health & Medicine

Which one of the following does not contain silver?

Science and TechnologyPractice
2006 • Q320Health & Medicine

Which are the materials generally employed as solder in soldering operations in electronics?

Science and TechnologyPractice
2024 • Q1Biotechnology & Genetics

"Membrane Bioreactors" are often discussed in the context of:

Science and TechnologyPractice
2024 • Q2Biotechnology & Genetics

Which one of the following is synthesised in the human body that dilates blood vessels and increases blood flow?

Science and TechnologyPractice

Frequently Asked Questions — UPSC Prelims 2007 Q317

What is the official answer for UPSC Prelims 2007 GS Paper I Question 317 (Science and Technology)?

The official UPSC answer key for this 2007 Science and Technology (Health & Medicine) question is Option (B): "Selenium". 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?

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.

Beyond Previous Year Questions

Structured Prelims Practice & Mentorship

Pair previous year question analysis with full-length simulated mock tests and 1-on-1 faculty guidance.

APT 2027 • 50 Prelims Tests17% OFF

Acme Prelims Test Series (APT)

Built to eliminate 1/3rd negative marking losses and 50–50 option traps through structured simulation and NCERT-backed keys.

  • 50 High-Yield Tests: Subject Sectionals, Current Affairs, CSAT Paper II & Full-Length Simulators
  • 1/3rd Penalty & Trap Analytics: Identify whether marks are lost to over-attempting or conceptual gaps
  • Option-by-Option NCERT Keys: Detailed distractor analysis and elimination logic for every question
  • Custom PDF-to-Mock Generator: Convert your revision notes or current affairs PDFs into practice tests
Complete 50-Test Package
₹1,493₹1,799• Valid till Prelims 2027
Explore APT Test SeriesTry Free Mock
1-on-1 Personal MentorshipCapped at 10 Seats

1-on-1 UPSC Mentorship with Avinash Sir

Weekly 1-on-1 strategy reviews, daily study accountability, and personalized MCQ attempt audits with an experienced UPSC mentor.

  • Weekly 1-on-1 Sessions: Direct mentorship with Avinash Sir (Former Plutus IAS Mentor, UPSC & UPPCS Mains Written)
  • APT 50-Test Series Included: Full Prelims GS1 & CSAT test series bundled at no additional cost
  • Mock Attempt & Elimination Audit: Question-by-question review to calibrate your risk and attempt accuracy
  • Prelims & Integrated Tracks: Available as dedicated Prelims mentorship or end-to-end Prelims + Mains guidance
Prelims & Integrated Tracks
17% OFF• Includes APT 50-Test Series
Explore 1-on-1 MentorshipCompare Tracks
Previous QuestionParticipatory Notes (PNs) are associated with which one of the following?
Next QuestionWhich one among the following is called philosopher’s wool?