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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 210 of 210
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Question 2091 Easy

What is valency?

A
The mass number
B
The number of neutrons
C
The combining capacity of an atom
D
The atomic number
Question 2092 Easy

What is a vibration?

A
Energy
B
A repeated to-and-fro or up-and-down motion
C
A sound
D
A wave
Question 2093 Easy

What is a voltmeter?

A
A device to measure resistance
B
A device to measure potential difference
C
A device to measure current
D
A power meter
Question 2094 Easy

What is water pollution?

A
Purification of water
B
Addition of harmful substances to water
C
Heating of water
D
Distillation of water
Question 2095 Easy

What is a wave?

A
A particle
B
A stationary object
C
A force
D
A disturbance that transfers energy
Question 2096 Easy

What is wavelength?

A
Distance between two adjacent compressions or rarefactions
B
The speed of a wave
C
The frequency of a wave
D
The height of a wave
Question 2097 Easy

What is the function of an ammeter in a circuit?

A
To measure voltage
B
To provide power
C
To measure electric current
D
To measure resistance
Question 2098 Easy

Which particle determines the atomic number of an element?

A
Electron
B
Photon
C
Neutron
D
Proton
Question 2099 Easy

What type of wave is a sound wave?

A
Electromagnetic wave
B
Longitudinal wave
C
Surface wave
D
Transverse wave
Question 2100 Easy

What is the main function of the heart?

A
To filter waste
B
To pump blood
C
To digest food
D
To breathe air
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