Chemistry MCQs with answers Page - 146

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following elements is used in making matchsticks?

  • (A) Phosphorus
  • (B) Sulphur
  • (C) Magnesium
  • (D) Potassium

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What is the molecular formula of ozone?

  • (A) O₂
  • (B) O₃
  • (C) O₄
  • (D) O

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following substances is used to make glass opaque?

  • (A) Calcium carbonate
  • (B) Tin oxide
  • (C) Sodium carbonate
  • (D) Magnesium oxide

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which gas is known as ‘marsh gas’?

  • (A) Methane
  • (B) Ethane
  • (C) Propane
  • (D) Butane

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following elements forms rust when exposed to air and moisture?

  • (A) Copper
  • (B) Iron
  • (C) Aluminium
  • (D) Silver

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which metal is found in blood hemoglobin?

  • (A) Copper
  • (B) Zinc
  • (C) Iron
  • (D) Calcium

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which gas is responsible for the smell of rotten eggs?

  • (A) Hydrogen chloride
  • (B) Hydrogen sulfide
  • (C) Sulphur dioxide
  • (D) Ammonia

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which acid is present in sour milk?

  • (A) Citric acid
  • (B) Lactic acid
  • (C) Acetic acid
  • (D) Formic acid

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following gases is lighter than air?

  • (A) Carbon dioxide
  • (B) Nitrogen
  • (C) Helium
  • (D) Argon

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. What is the color of copper sulfate solution?

  • (A) Red
  • (B) Green
  • (C) Blue
  • (D) Yellow

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