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Question No. 83Interactive Test Mode
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Q83. In addition to fingerprint scanning, which of the following can be used in the biometric identification of a person? 1. Iris scanning 2. Retinal scanning 3. Voice recognition Select the correct answer using the code given below.

In addition to fingerprint scanning, which of the following can be used in the biometric identification of a person?

  1. Iris scanning
  2. Retinal scanning
  3. Voice recognition Select the correct answer using the code given below.
Select the correct option below (or cross out options to eliminate)

Official Answer Key & Detailed Solution

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Official UPSC Answer KeyUPSC Prelims 2014 • Science and Technology

Correct Answer: Option (D) — 1, 2 and 3

Concept & Option Breakdown

Standard Reference Verified

Biometric identifiers include physiological characteristics (fingerprints, iris, retina, face, hand geometry) and behavioral characteristics (voice, keystroke dynamics, gait). Statement 1 is correct: Iris scanning uses infrared illumination to capture the complex, unique patterns of the iris. Statement 2 is correct: Retinal scanning maps the unique capillary blood vessel pattern in the retina at the back of the eye. Statement 3 is correct: Voice recognition analyzes vocal tract geometry and acoustic characteristics to verify an individual's identity.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2014 (Q83)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (D) — (d) 1, 2 and 3

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Frequently Asked Questions — UPSC Prelims 2014 Q83

What is the official answer for UPSC Prelims 2014 GS Paper I Question 83 (Science and Technology)?

The official UPSC answer key for this 2014 Science and Technology (Health & Medicine) question is Option (D): "(d) 1, 2 and 3". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2014 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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