Science MCQs

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

Total Questions
2100
Page 175 of 210
Question 1741 Easy

Which is a characteristic of physical changes?

A
New substances formed
B
Composition changes
C
Reversible
D
Temporary
Question 1742 Easy

Fertilizers help plants by providing?

A
Water
B
Sunlight
C
Nutrients
D
Shade
Question 1743 Easy

Liquid fertilizers are advantageous because they are?

A
Dusty
B
Hard to apply
C
Easily absorbed
D
Expensive
Question 1744 Easy

The process of making plastic bottles involves?

A
Cutting
B
Melting and moulding
C
Freezing
D
Evaporation
Question 1745 Easy

Why is recycling plastics important?

A
To increase cost
B
To reduce pollution
C
To use more oil
D
To make them heavier
Question 1746 Easy

Which change occurs when milk turns into yogurt?

A
Physical change
B
Chemical change
C
Reversible change
D
No change
Question 1747 Easy

Which change occurs when ice melts?

A
Chemical change
B
Physical change
C
Irreversible change
D
Decomposition
Question 1748 Easy

What indicates a chemical change in the baking soda and vinegar experiment?

A
Color change
B
Gas formation
C
Temperature change
D
All of these
Question 1749 Easy

Hydrocarbons are primarily used as?

A
Fertilizers
B
Fuels
C
Plastics
D
Medicines
Question 1750 Easy

The chemical formula of water is always?

A
HO
B
H2O
C
H2O2
D
HO2
Showing 1741-1750 of 2100 questions

Quick Stats

Total Questions 10900
easy 5797
medium 2983
hard 2120

Practice Tips

Time Management

Practice with time limits for better preparation

Review Mistakes

Always check explanations for wrong answers

Track Progress

Monitor your improvement across subjects

Did You Know?

Practice Makes Perfect

Regular practice with MCQs can improve your test-taking speed and accuracy by up to 40%.

Active Recall

MCQs engage active recall, which is 50% more effective for long-term memory than passive reading.