Chemistry MCQs with answers Page - 141

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following is not an alkali metal?

  • (A) Sodium
  • (B) Potassium
  • (C) Calcium
  • (D) Lithium

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which gas turns lime water milky?

  • (A) Carbon dioxide
  • (B) Oxygen
  • (C) Nitrogen
  • (D) Hydrogen

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which chemical is used in the preservation of food?

  • (A) Sodium chloride
  • (B) Sodium benzoate
  • (C) Sodium hydroxide
  • (D) Sodium carbonate

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following is used as a refrigerant in cooling systems?

  • (A) Methane
  • (B) Ammonia
  • (C) Carbon monoxide
  • (D) Oxygen

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which element is common in all organic compounds?

  • (A) Oxygen
  • (B) Carbon
  • (C) Nitrogen
  • (D) Sulfur

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following is a chemical compound?

  • (A) Air
  • (B) Salt
  • (C) Steel
  • (D) Brass

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What is the common name of sodium bicarbonate?

  • (A) Washing soda
  • (B) Baking soda
  • (C) Caustic soda
  • (D) Bleaching powder

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following is a non-metal that conducts electricity?

  • (A) Sulfur
  • (B) Phosphorus
  • (C) Graphite
  • (D) Helium

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following acids is used in car batteries?

  • (A) Hydrochloric acid
  • (B) Sulphuric acid
  • (C) Nitric acid
  • (D) Phosphoric acid

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which element is used in making pencil leads?

  • (A) Carbon
  • (B) Lead
  • (C) Zinc
  • (D) Iron

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