A pressure cooker reduces cooking time because MCQ with Answer and Explanation

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A pressure cooker reduces cooking time because

A. High pressure increases boiling point

B. Low pressure decreases boiling point

C. More water is used

D. It absorbs more heat

Answer: Option A

Solution (By JKSSB Mock Tests)

Higher pressure raises boiling point, so water can reach temperatures above 100°C, cooking food faster. At high altitudes, pressure cooker compensates for lower atmospheric pressure.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1

The unit of magnetic field strength is

A. Farad

B. Weber

C. Tesla

D. Henry

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Correct Answer: Option C

Explanation:
Tesla (T) = N/(A·m) = Wb/m². Weber is magnetic flux. Henry is inductance. Farad is capacitance. Gauss is another unit (1 T = 10⁴ G).

This question belongs to: Science Physics

Question #2

A proton and an electron enter a uniform magnetic field with same velocity perpendicular to field. Which has larger radius?

A. Same

B. Proton

C. Electron

D. Depends on charge

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Correct Answer: Option B

Explanation:
r = mv/(qB). Proton mass >> electron mass, so radius larger.

This question belongs to: Science Physics

Question #3

Land breeze blows at night because

A. Sea cools faster than land

B. Earth rotation

C. Land cools faster than sea

D. Land is hot

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Correct Answer: Option C

Explanation:
At night land cools quickly, high pressure over land, low over sea, wind from land to sea. Sea breeze opposite.

This question belongs to: Science Physics

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