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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
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Question 2071 Easy

What are producers?

A
Decomposers
B
Consumers
C
Organisms that eat producers
D
Organisms that make their own food
Question 2072 Easy

What is radiation?

A
Heat transfer by contact
B
Heat transfer through empty space
C
Conduction
D
Heat transfer by fluid movement
Question 2073 Easy

What is a radiator?

A
A cooling device
B
A conductor
C
A material that emits heat
D
A type of wave
Question 2074 Easy

What is refraction?

A
Dispersion of light
B
Bending of light when it changes speed
C
Reflection of light
D
Absorption of light
Question 2075 Easy

What is refractive index?

A
Ratio of light speed in vacuum to speed in a medium
B
Critical angle
C
Angle of incidence
D
Angle of reflection
Question 2076 Easy

What is resistance?

A
Opposition to the flow of current
B
Power
C
Voltage
D
Flow of electrons
Question 2077 Easy

What is respiration?

A
Breathing
B
Digestion
C
The process of breaking down food to release energy
D
Photosynthesis
Question 2078 Easy

What is a reversible change?

A
A change that can be undone
B
Burning
C
A permanent change
D
A chemical change
Question 2079 Easy

What is saliva?

A
A watery substance that helps digest carbohydrates
B
A blood component
C
A hormone
D
A stomach acid
Question 2080 Easy

What is a seed?

A
A root
B
A part containing a new plant and stored food
C
A leaf
D
A flower
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