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Science MCQs

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Total Questions
2100
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Question 1631 Easy

What is the main cause of water-related diseases like diarrhea?

A
Drinking clean water
B
Drinking polluted water
C
Swimming in pools
D
Washing hands
Question 1632 Easy

Which method uses a filter to remove impurities?

A
Boiling
B
Filtration
C
Chlorination
D
Distillation
Question 1633 Easy

Why should water be boiled for 15-30 minutes?

A
To improve taste
B
To kill germs
C
To add minerals
D
To change color
Question 1634 Easy

What is the purpose of a condenser in distillation?

A
To boil water
B
To cool steam
C
To add chemicals
D
To filter water
Question 1635 Easy

Which sector in Pakistan uses the most fresh water?

A
Industries
B
Homes
C
Agriculture
D
Energy
Question 1636 Easy

What is a wetland?

A
Dry desert area
B
Area with little water
C
Area saturated with water
D
Mountain region
Question 1637 Easy

Which is a common household use of water?

A
Generating electricity
B
Cooling engines
C
Washing and cleaning
D
Irrigating fields
Question 1638 Easy

What is the effect of acid rain on water bodies?

A
Improves water quality
B
Has no effect
C
Harms aquatic life
D
Increases oxygen
Question 1639 Easy

Which practice helps reduce water pollution?

A
Dumping waste in rivers
B
Using more fertilizers
C
Recycling industrial water
D
Burning plastic
Question 1640 Easy

What is the primary reason for water conservation?

A
To increase water bills
B
To waste more water
C
To ensure future supply
D
To pollute rivers
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