The boiling point of water in Kelvin is MCQ with Answer and Explanation

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The boiling point of water in Kelvin is

A. 212 K

B. 373 K

C. 273 K

D. 100 K

Answer: Option B

Solution (By JKSSB Mock Tests)

100°C = 373.15 K, approximately 373 K. Freezing 273 K. No degree sign for Kelvin. Kelvin scale starts at absolute zero.

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Practice More Physics Questions

Question #1

A electric iron of 500 W is used for 2 hours. Energy consumed in kWh is

A. 1000 kWh

B. 0.5 kWh

C. 250 kWh

D. 1 kWh

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Correct Answer: Option D

Explanation:
0.5 kW × 2 h = 1 kWh.

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Question #2

The energy of SHM when particle is at mean position is

A. All kinetic

B. All potential

C. Half KE half PE

D. Zero

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Correct Answer: Option A

Explanation:
At mean position, velocity maximum, displacement zero, all energy is kinetic.

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Question #3

TIR requires light travel from:

A. Any to vacuum

B. Air to glass

C. Water to glass

D. Glass to air

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Correct Answer: Option D

Explanation:
TIR: denser→rarer medium AND incidence angle > critical angle. Glass to air satisfies first condition; angle must exceed θ_c. Memory aid: 'TIR: n₁>n₂ AND i>θ_c; direction matters'. Optics condition frequently tested in competitive exams.

This question belongs to: Science Physics

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