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Science — SSC Questions & Practice

Practise 10 Science questions from SSC for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on Science — with answers

Try each question first, then open the answer. Explanations are included.

1. Which gas is commonly known as laughing gas?

  1. A100
  2. BOxygen
  3. CNitrous oxide
  4. DDiamond
Show answer

Answer: C

The correct answer is 'Nitrous oxide'.

2. Which planet is known as the 'Morning Star' and 'Evening Star'?

  1. AMercury
  2. BVenus
  3. COxygen
  4. DMitochondria
Show answer

Answer: B

The correct answer is 'Venus'.

3. Which gas do plants absorb from the atmosphere for photosynthesis?

  1. ALeaf
  2. BCarbon dioxide
  3. CHydrochloric acid
  4. DVitamin C
Show answer

Answer: B

The correct answer is 'Carbon dioxide'.

4. What is the boiling point of water at sea level in Celsius?

  1. A100
  2. BK
  3. CJames Chadwick
  4. DKelvin
Show answer

Answer: A

The correct answer is '100'.

5. Which is the hardest natural substance on Earth?

  1. AWhite blood cells
  2. BDiamond
  3. CMitochondria
  4. DAlexander Fleming
Show answer

Answer: B

The correct answer is 'Diamond'.

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