Science MCQs

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

Total Questions

2100

Page 161 of 210

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Question 1601 Easy

What percentage of Earth's surface is covered by water?

50%

60%

70%

80%

Question 1602 Easy

At what temperature does water freeze?

0°C

10°C

100°C

-10°C

Question 1603 Easy

At what temperature does water boil?

0°C

50°C

100°C

150°C

Question 1604 Easy

A water molecule is made up of which atoms?

Hydrogen and Nitrogen

Oxygen and Carbon

Hydrogen and Oxygen

Nitrogen and Oxygen

Question 1605 Easy

Which process do plants use water for to make food?

Respiration

Transpiration

Photosynthesis

Digestion

Question 1606 Easy

What is the main component of our blood by percentage?

60%

75%

85%

95%

Question 1607 Easy

Where is most of Earth's water found?

Rivers

Oceans

Glaciers

Lakes

Question 1608 Easy

What percentage of Earth's water is fresh water?

10%

25%

Question 1609 Easy

Which is a source of fresh water?

Ocean

Sea

Glacier

All of these

Question 1610 Easy

What is groundwater?

Water in clouds

Water in oceans

Water underground

Water in rivers

Showing 1601-1610 of 2100 questions

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Quick Stats

Total Questions 10900

easy 5797

medium 2983

hard 2120

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