SEBA Class 7 Science MCQ Chapter 9 Transfer of Heat In Nature

SEBA Class 7 Science MCQ Chapter 9 Transfer of Heat In Nature Solutions English Medium As Per SCERT New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters SEBA Class 7 Science MCQ Chapter 9 Transfer of Heat In Nature Notes and select need one. SEBA Class 7 Science Miltiple Choice Notes in English Download PDF. SCERT Class 7 Science Objective Type Solutions in English.

SEBA Class 7 Science MCQ Chapter 9 Transfer of Heat In Nature

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Transfer of Heat In Nature

Chapter: 9

PART – II

MCQ

Choose the Correct Option:

1. Transfer of heat from hot end to cold end of a body is called:

(a) Convection.

(b) Radiation.

(c) Conduction.

(d) Infiltration.

Ans: (c) Conduction.

2. Which is a good conductor of heat?

(a) Plastic.

(b) Wood.

(c) Bakelite.

(d) Copper.

Ans: (d) Copper.

3. Materials that do not allow heat to pass easily are called:

(a) Good conductors.

(b) Bad conductors/insulators.

(c) Heat absorbers.

(d) None.

Ans: (b) Bad conductors/insulators.

4. Air is a:

(a) Good conductor.

(b) Bad conductor.

(c) Both.

(d) None.

Ans: (b) Bad conductor.

5 In liquids and gases heat mainly transfers by:

(a) Conduction.

(b) Convection.

(c) Radiation.

(d) Absorption.

Ans: (b) Convection.

6. Heat from the sun reaches Earth by:

(a) Conduction.

(b) Convection.

(c) Radiation.

(d) Evaporation.

Ans: (c) Radiation.

7. Which process does not require a medium?

(a) Conduction.

(b) Convection.

(c) Radiation.

(d) Infiltration.

Ans: (c) Radiation.

8. Wind blowing from sea to land during day is:

(a) Sea breeze.

(b) Land breeze.

(c) Monsoon wind.

(d) Storm.

Ans: (a) Sea breeze.

9. Wind blowing from land to sea at night is:

(a) Sea breeze.

(b) Land breeze.

(c) Westerly wind.

(d) Hot wind.

Ans: (b) Land breeze.

10. In summer we feel comfortable wearing:

(a) Black clothes.

(b) Dark blue clothes.

(c) White or light coloured clothes.

(d) Red clothes.

Ans: (c) White or light coloured clothes.

11. Dark coloured clothes:

(a) Absorb less heat.

(b) Absorb more heat.

(c) Do not absorb heat.

(d) Reflect heat.

Ans: (b) Absorb more heat.

12. SI unit of heat is:

(a) Celsius.

(b) Degree.

(c) Joule.

(d) Kelvin.

Ans: (c) Joule.

13. Emergency blankets are made of:

(a) Wool.

(b) Cotton.

(c) Plastic sheet.

(d) Thin aluminium layer.

Ans: (d) Thin aluminium layer.

14. Heat resistant tiles of spacecraft can tolerate up to:

(a) 1000°C.

(b) 1260°C.

(c) 1500°C.

(d) 2000°C.

Ans: (b) 1260°C.

15. Flow of water through soil and rocks is called:

(a) Convection.

(b) Infiltration.

(c) Evaporation.

(d) Condensation.

Ans: (b) Infiltration.