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Science MCQs

Practice multiple choice questions with instant feedback. Select an option to see if you're correct.

Total Questions
2100
Page 113 of 210
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Question 1121 Easy

What happens to a metal ball when heated?

A
It expands
B
It contracts
C
It melts
D
It evaporates
Question 1122 Easy

Why are gaps left in concrete roads?

A
To allow for expansion in heat
B
To save material
C
For drainage
D
For decoration
Question 1123 Easy

Why are railway tracks built with gaps?

A
To reduce cost
B
To allow for thermal expansion
C
For safety during rain
D
For easy maintenance
Question 1124 Easy

What is conduction?

A
Heat transfer by fluid movement
B
Heat transfer through particle vibrations
C
Heat transfer by rays
D
Heat transfer by waves
Question 1125 Easy

Which of the following is a good conductor of heat?

A
Wood
B
Copper
C
Plastic
D
Rubber
Question 1126 Easy

Which material is a poor conductor of heat?

A
Aluminum
B
Wood
C
Silver
D
Iron
Question 1127 Easy

What is convection?

A
Heat transfer by movement of fluids
B
Heat transfer by vibrations
C
Heat transfer by rays
D
Heat transfer by conduction
Question 1128 Easy

How does heat from the Sun reach Earth?

A
Radiation
B
Conduction
C
Convection
D
Insulation
Question 1129 Easy

What is radiation?

A
Heat transfer in the form of rays
B
Heat transfer through solids
C
Heat transfer through fluids
D
Heat transfer through collisions
Question 1130 Easy

Which method of heat transfer does not require a medium?

A
Radiation
B
Conduction
C
Convection
D
Insulation
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Total Questions 11450
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medium 3533
hard 2120

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