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1000+ MCQs for Grade-6

Topic:

1: 1. What is air composed of?
a. Oxygen and Nitrogen
b. Hydrogen and Carbon
c. Helium and Argon
d. Carbon dioxide and Water vapor
Answer: a. Oxygen and Nitrogen

2: 2. Which gas makes up the majority of Earth's atmosphere?
a. Oxygen
b. Nitrogen
c. Carbon dioxide
d. Hydrogen
Answer: b. Nitrogen

3: 3. What gas do plants absorb from the air during photosynthesis?
a. Oxygen
b. Carbon dioxide
c. Nitrogen
d. Hydrogen
Answer: b. Carbon dioxide

4: 4. What is the approximate percentage of oxygen in the air?
a. 21%
b. 50%
c. 78%
d. 10%
Answer: a. 21%

5: 5. Which layer of the atmosphere contains the ozone layer?
a. Troposphere
b. Stratosphere
c. Mesosphere
d. Thermosphere
Answer: b. Stratosphere

6: 6. What is the role of the ozone layer in the atmosphere?
a. Absorbing ultraviolet (UV) radiation
b. Producing oxygen
c. Absorbing carbon dioxide
d. Creating rain
Answer: a. Absorbing ultraviolet (UV) radiation

7: 7. Which gas do humans and animals inhale from the air?
a. Nitrogen
b. Oxygen
c. Carbon dioxide
d. Hydrogen
Answer: b. Oxygen

8: 8. What is the process by which plants release water vapor into the air?
a. Transpiration
b. Condensation
c. Evaporation
d. Precipitation
Answer: a. Transpiration

9: 9. Which layer of the atmosphere is closest to the Earth's surface?
a. Troposphere
b. Stratosphere
c. Mesosphere
d. Thermosphere
Answer: a. Troposphere

10: 10. What is the process of the Earth's surface warming up due to the sun's rays?
a. Conduction
b. Convection
c. Radiation
d. Insulation
Answer: c. Radiation

Learn New Vocabulary

Word: cabal

Meaning: a clique that seeks power usually through intrigue

Sentences: Supposedly, see, there's this global cabal of scientists conspiring to bring about socialist one-world government.

Facts of Science

Do you know ?

Fact: The human brain is more active during sleep than during the day when awake.

Facts of Digital World

Do you know about Deepfake Technology ?

Deepfakes use AI to create realistic-looking fake videos, often featuring celebrities or public figures.

Learn New Vocabulary

Word: mendicant

Meaning: a pauper who lives by begging

Sentences: In others are the broken-down mendicants who live on soup-kitchens and begging. Ritchie, J. Ewing (James Ewing)

Facts of Science

Do you know ?

Fact: A single rainforest can produce 20% of the Earth's oxygen.

Facts of Digital World

Do you know about Internet Users ?

As of 2022, there are over 4.9 billion internet users worldwide.