Acme Ai
A
अ
GS Paper IUPSC Prelims 1999
Health & Medicine
Question No. 278Interactive Test Mode
00:00
+2-0.66

Q278. Consider the following statements regarding a motor car battery: 1. The voltage is usually 12 V. 2. Electrolyte used is hydrochloric acid. 3. Electrodes are lead and copper. 4. Capacity is expressed in ampere-hour. Which of the above statements are correct?

Consider the following statements regarding a motor car battery:

  1. The voltage is usually 12 V.
  2. Electrolyte used is hydrochloric acid.
  3. Electrodes are lead and copper.
  4. Capacity is expressed in ampere-hour. Which of the above statements are correct?
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 1999 • Science and Technology

Correct Answer: Option (D) — 1 and 4

Concept & Option Breakdown

Standard Reference Verified
  • Statement 1 is correct: Automotive batteries standardly consist of six 2V lead-acid cells in series, delivering 12 V.
  • Statement 2 is incorrect: The electrolyte is dilute sulfuric acid (H₂SO₄), not hydrochloric acid.
  • Statement 3 is incorrect: The electrodes are lead (Pb) anode and lead dioxide (PbO₂) cathode, not copper.
  • Statement 4 is correct: Battery capacity is specified in Ampere-hours (Ah).
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 1999 (Q278)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (D) — 1 and 4

Related & Repeated Prelims PYQs (1)

Questions from other UPSC Prelims years testing the same or closely linked concept.

View Cluster in 3D Graph
1998 • Q33880% Match

Consider the following statements : Coke is one of the materials of the charge added to blast furnaces for the production of steel/iron. Its function is to: 1.

Science and Technology • Health & MedicineSolve

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
2006 • Q272Health & Medicine

Which one of the following is printed on a commonly used fluorescent tube light?

Science and TechnologyPractice
2005 • Q273Health & Medicine

What is the order of magnitude of electric resistance of the human body (dry)?

Science and TechnologyPractice
2004 • Q274Health & Medicine

Assertion (A): In our houses, the current in the A.C. electricity line changes direction 60 times per second. Reason (R): The frequency of alternating

Science and TechnologyPractice
2001 • Q275Health & Medicine

Two wires have their lengths, diameters and resistivities all in the ratio of 1: 2 If the resistance of the thinner wire is 10 ohm, the resistance of

Science and TechnologyPractice
2000 • Q276Health & Medicine

Fluorescent tubes are fitted with a choke. The choke coil:

Science and TechnologyPractice
1999 • Q277Health & Medicine

Consider the following statements: An ordinary light bulb has a rather short life because the: 1. filament wire is not uniform. 2. bulb cannot be evac

Science and TechnologyPractice
1998 • Q279Health & Medicine

A fuse is used in mains electric supply as a safety device. Which one of the following statements about the fuse is correct?

Science and TechnologyPractice
1998 • Q280Health & Medicine

Assertion (A): The temperature of a metal wire rises when an electric current is passed through it. Reason (R): Collision of metal atoms with each oth

Science and TechnologyPractice

Frequently Asked Questions — UPSC Prelims 1999 Q278

What is the official answer for UPSC Prelims 1999 GS Paper I Question 278 (Science and Technology)?

The official UPSC answer key for this 1999 Science and Technology (Health & Medicine) question is Option (D): "1 and 4". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 1999 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 QuestionConsider the following statements: An ordinary light bulb has a rather short life because the: 1. filament wire is not uniform. 2. bulb cannot be evacuated completely. 3. wires supporting the filament melt at high temperatures. Which of the above statements are correct?
Next QuestionWhich one of the following statements is not correct?