Pressure cooker cooks food faster because MCQ with Answer and Explanation

Question Report Error

Pressure cooker cooks food faster because

A. Low pressure raises boiling point

B. High pressure lowers boiling point

C. Temperature is low

D. High pressure raises boiling point

Answer: Option D

Solution (By JKExamLibrary)

Higher pressure inside increases boiling point, food cooks at higher temperature.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error

A machine does 500 J of work in 10 seconds. Its power is

A. 5 W

B. 5000 W

C. 0.5 W

D. 50 W

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Correct Answer: Option D

Explanation:
Power = work/time = 500/10 = 50 W. Watt = Joule/second. This is average power. Simple division. Higher power means faster rate of doing work.

This question belongs to: Science Physics

Question #2 Report Error

A 1000 W heater is used for 2 hours. Energy consumed in kWh is

A. 1000 kWh

B. 0.5 kWh

C. 2000 kWh

D. 2 kWh

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Correct Answer: Option D

Explanation:
Power = 1 kW (1000 W). Time = 2 h. Energy = Power × time = 1 × 2 = 2 kWh. 1 kWh = 3.6 × 10⁶ J, but here answer in kWh. Commercial unit.

This question belongs to: Science Physics

Question #3 Report Error

The unit of impulse is

A. N s

B. N m

C. J s

D. N/m

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Correct Answer: Option A

Explanation:
Impulse = F×Δt, unit N s, same as momentum kg m/s.

This question belongs to: Science Physics

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