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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: muse

Meaning: reflect deeply on a subject

Sentences: Musing about the Big Picture may be a lot more gratifying than focusing on the details of the specific policies that aren’t working.

Facts of Science

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Fact: The largest known volcano in our solar system is on Mars - Olympus Mons.

Facts of Digital World

Do you know about Digital Literacy ?

Digital literacy involves the ability to use, understand, and critically evaluate information and communication technologies.

Learn New Vocabulary

Word: fulminate

Meaning: criticize severely

Sentences: But with people looking for almost any excuse to fulminate against airlines these days, there's a certain risk of embellishment.

Facts of Science

Do you know ?

Fact: A group of crows is called a "murder."

Facts of Digital World

Do you know about Cryptocurrency Mining ?

Mining involves solving complex mathematical problems to validate and secure transactions on blockchain networks.