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General Science Quiz: 10 Science GK Questions with Answers

Written by the Quizzeela team
Last checked · 10 questions · Easy

General science carries easy marks in competitive exams. These 10 questions mix physics, chemistry and biology.

Play as a timed quiz and earn coins

1What is the chemical symbol for gold?

  1. Gd
  2. Ag
  3. Go
  4. Au
Show answer
Answer: D. Au. Au comes from the Latin word "aurum". Ag is silver.

2Which part of the cell is called its powerhouse?

  1. Mitochondria
  2. Cell wall
  3. Ribosome
  4. Nucleus
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Answer: A. Mitochondria. Mitochondria release energy from food, so they are called the powerhouse of the cell.

3What is the chemical formula of common salt?

  1. NaCl
  2. CaCO₃
  3. H₂O
  4. KCl
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Answer: A. NaCl. Common salt is sodium chloride, NaCl.

4Lack of vitamin C causes:

  1. Scurvy
  2. Rickets
  3. Night blindness
  4. Beriberi
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Answer: A. Scurvy. Scurvy is caused by lack of vitamin C. Rickets is from lack of vitamin D.

5How many bones does an adult human body have?

  1. 306
  2. 206
  3. 186
  4. 226
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Answer: B. 206. An adult has 206 bones. Babies are born with more, which fuse as they grow.

6What is the pH of pure water?

  1. 5
  2. 0
  3. 14
  4. 7
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Answer: D. 7. Pure water is neutral, with a pH of 7.

7Which gas do plants take in for photosynthesis?

  1. Hydrogen
  2. Oxygen
  3. Carbon dioxide
  4. Nitrogen
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Answer: C. Carbon dioxide. Plants take in carbon dioxide and release oxygen during photosynthesis.

8Which is the largest organ of the human body?

  1. Skin
  2. Brain
  3. Liver
  4. Lungs
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Answer: A. Skin. The skin is the largest organ. The liver is the largest internal organ.

9Which blood cells mainly fight infections?

  1. White blood cells
  2. Plasma
  3. Red blood cells
  4. Platelets
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Answer: A. White blood cells. White blood cells defend the body against germs. Platelets help blood clot.

10Light travels at roughly what speed in a vacuum?

  1. 3,000 km per second
  2. 30 lakh km per second
  3. 300 km per second
  4. 3 lakh km per second
Show answer
Answer: D. 3 lakh km per second. Light travels at about 3 × 10⁸ metres per second, or about 3 lakh km every second.
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Sources: NCERT science textbooks. Found a mistake? Use "Report a mistake" in the timed quiz.