Heat Practice Questions

Class 7 · Science · 1144 free MCQs with instant results and detailed explanations.

1144

Total

354

Easy

565

Medium

225

Hard

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Topics in Heat

Conduction Convection Radiation 380

Temperature 390

Thermometer 374

Sample Questions from Heat

Here are 10 sample questions. Start a quiz to get randomized questions with scoring.

Easy

What instrument is commonly used to measure temperature?

A. Thermometer

B. Barometer

C. Hydrometer

D. Anemometer

Show Answer & Explanation

Correct Answer: A

A thermometer is specifically designed to measure temperature.

Easy

What is the freezing point of water in Celsius?

A. 0°C

B. 100°C

C. 50°C

D. 25°C

Show Answer & Explanation

Correct Answer: A

The freezing point of water is defined as 0 degrees Celsius.

Easy

Which of the following scales is used for measuring temperature in most countries?

A. Fahrenheit

B. Celsius

C. Kelvin

D. Rankine

Show Answer & Explanation

Correct Answer: B

Celsius is the most widely used temperature scale in most countries.

Medium

What instrument is used to measure temperature?

A. Thermometer

B. Barometer

C. Hygrometer

D. Anemometer

Show Answer & Explanation

Correct Answer: A

A thermometer is specifically designed to measure temperature, whereas the other instruments measure pressure, humidity, and wind speed.

Medium

At what temperature does water freeze on the Celsius scale?

A. 0°C

B. 100°C

C. 32°C

D. -32°C

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Correct Answer: A

Water freezes at 0 degrees Celsius, which is a fundamental point on the Celsius temperature scale.

Medium

Which of the following temperatures is considered normal human body temperature?

A. 35°C

B. 37°C

C. 39°C

D. 40°C

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Correct Answer: B

The average normal human body temperature is around 37 degrees Celsius.

Medium

If the temperature is raised from 20°C to 100°C, what is the change in temperature?

A. 80°C

B. 100°C

C. 120°C

D. 60°C

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Correct Answer: A

The change in temperature is simply calculated by subtracting the initial temperature from the final temperature: 100°C - 20°C = 80°C.

Hard

What is the temperature at which water boils at standard atmospheric pressure?

A. 100°C

B. 90°C

C. 110°C

D. 80°C

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Correct Answer: A

Water boils at 100°C under standard atmospheric pressure (1 atm). This is a fundamental property of water used in many scientific calculations.

Hard

Which of the following materials would feel the coldest to touch at the same temperature?

A. Wood

B. Metals

C. Glass

D. Plastic

Show Answer & Explanation

Correct Answer: B

Metals have a higher thermal conductivity than wood, glass, and plastic. Therefore, they transfer heat away from your skin more quickly, making them feel colder at the same temperature.

Q10

Hard

If the temperature of an object increases by 20°C, what is the corresponding increase in Kelvin?

A. 20 K

B. 10 K

C. 30 K

D. 25 K

Show Answer & Explanation

Correct Answer: A

The Celsius and Kelvin scales have the same incremental value. Thus, an increase of 20°C corresponds to an increase of 20 K.

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Heat — Class 7 Science Practice Questions Online

This page contains 1144 practice MCQs for the chapter Heat in Class 7 Science. The questions are organized by difficulty — 354 easy, 565 medium, 225 hard — so you can choose the right level for your preparation.

Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 3 topics, giving you comprehensive coverage of the entire chapter.