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Science Smart Quiz

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Test your science knowledge in the Science Smart Quiz !
Answer 10 fun questions and win exciting rewards.
(Each email ID can play only 2 times.)

Question 1 of 10

1. What is the chemical symbol for water?

A) H2O

B) CO2

C) NaCl

D) O2

2. Which planet is known as the Red Planet?

A) Venus

B) Mars

C) Jupiter

D) Saturn

3. What is the speed of light in vacuum?

A) 300,000 km/s

B) 150,000 km/s

C) 299,792,458 m/s

D) 250,000 km/s

4. Which gas makes up about 78% of Earth's atmosphere?

A) Oxygen

B) Carbon Dioxide

C) Nitrogen

D) Argon

5. What is the smallest unit of matter?

A) Molecule

B) Atom

C) Cell

D) Electron

6. What is the process by which plants make their food?

A) Respiration

B) Photosynthesis

C) Digestion

D) Fermentation

7. Which scientist developed the theory of relativity?

A) Isaac Newton

B) Albert Einstein

C) Galileo Galilei

D) Stephen Hawking

8. What is the hardest natural substance on Earth?

A) Gold

B) Iron

C) Diamond

D) Quartz

9. How many bones are in an adult human body?

A) 206

B) 300

C) 150

D) 250

10. What is the pH value of pure water?

A) 6

B) 7

C) 8

D) 9

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Technology Smart Quiz

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Join the Technology Smart Quiz and test your tech knowledge!
Answer 10 fun technology questions and win exciting rewards.
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Thank you for playing the Technology Smart Quiz 2025!
Keep innovating, keep exploring, and keep winning! 🌟

🛠️ Engineering Smart Quiz

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Test your engineering knowledge and win exclusive rewards!

Answer 10 interactive questions to unlock amazing prizes.

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Question 1 of 10

Question 1

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➗ Maths Smart Quiz - Play, Learn & Win!

STEM Quiz

Test your maths knowledge in the Maths Smart Quiz !
Answer 10 interactive questions and win amazing rewards.
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🌟 Quiz Rules – Just Have Fun! 🌟

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Prizes:
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Competition

Science Smart Quiz

1. What is the chemical symbol for water?