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GS Paper IUPSC Prelims 1996
Health & Medicine
Question No. 241Interactive Test Mode
00:00
+2-0.66

Q241. A liquid is flowing in a streamlined manner through a cylindrical pipe. Along a section containing the axis of the pipe, the flow profile will be:

A liquid is flowing in a streamlined manner through a cylindrical pipe. Along a section containing the axis of the pipe, the flow profile will be:

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UPSC Prelims 1996 Science and Technology (Health & Medicine) Question 241 Diagram
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Official Answer Key & Detailed Solution

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Official UPSC Answer KeyUPSC Prelims 1996 • Science and Technology

Correct Answer: Option (A)

Concept & Option Breakdown

Standard Reference Verified

In laminar (streamline) flow of a viscous liquid through a pipe, the layer in direct contact with the pipe walls has zero velocity due to the no-slip condition, while the velocity increases towards the central axis where it is maximum. This creates a parabolic velocity profile with arrows pointing in the direction of flow, shortest near the walls and longest along the central axis, as correctly shown in diagram (a).

Elimination Heuristic & Exam Approach

Viscous drag makes velocity zero at pipe walls and maximum at the center axis, creating a forward-pointing parabolic profile.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 1996 (Q241)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (A) — (a)

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Frequently Asked Questions — UPSC Prelims 1996 Q241

What is the official answer for UPSC Prelims 1996 GS Paper I Question 241 (Science and Technology)?

The official UPSC answer key for this 1996 Science and Technology (Health & Medicine) question is Option (A): "(a)". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 1996 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?

Viscous drag makes velocity zero at pipe walls and maximum at the center axis, creating a forwardpointing parabolic profile.

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