Change set

Pick exam & year, then Go.

Question map
Not attempted Correct Incorrect Bookmarked
Loading…
Q113 (IAS/1999) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Basic mechanics concepts Answer Verified

Match List I (Quantity) with List II (Units) and select the correct answer using the codes given below the Lists

List I | List II
I. High speed | (A) Mach
II. Wavelength | (B) Angstrom
III. Pressure | (C) Pascal
IV. Energy | (D) Joule

Result
Your answer:  ·  Correct: C
Explanation

The matching given in the question pairs the four quantities with their conventional units as: High speed → Mach (a dimensionless number expressing speed relative to the speed of sound), Wavelength → Angstrom (commonly used for atomic-scale wavelengths), Pressure → Pascal (SI unit equal to N·m⁻²), and Energy → Joule (SI unit of energy). These exact pairs appear in the provided List I–List II mapping, which directly lists I. High speed: A) Mach; II. Wavelength: B) Angstrom; III. Pressure: C) Pascal; IV. Energy: D) Joule, yielding I–A, II–B, III–C, IV–D as the correct code.

How others answered
Each bar shows the % of students who chose that option. Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
81%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

5 Cross-Linked PYQs

UPSC repeats concepts across years. Login to see how this question connects to 5 others.

Login with Google