Chemistry MCQs with answers Page - 149

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What is the main ore of iron?

  • (A) Bauxite
  • (B) Hematite
  • (C) Galena
  • (D) Cinnabar

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which process is used to separate alcohol from water?

  • (A) Filtration
  • (B) Distillation
  • (C) Sedimentation
  • (D) Decantation

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What is dry ice?

  • (A) Solid water
  • (B) Solid carbon dioxide
  • (C) Frozen nitrogen
  • (D) Solid oxygen

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What is the chemical formula of ammonia?

  • (A) NH₃
  • (B) H₂O
  • (C) CH₄
  • (D) CO₂

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following metals reacts with cold water?

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

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following acids is present in vinegar?

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

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What type of bond is formed between two atoms sharing electrons?

  • (A) Ionic bond
  • (B) Covalent bond
  • (C) Metallic bond
  • (D) Hydrogen bond

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following elements is essential for respiration?

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

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What is the common name of calcium carbonate?

  • (A) Limestone
  • (B) Gypsum
  • (C) Marble
  • (D) Both Limestone and Marble

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following elements is a metalloid?

  • (A) Sodium
  • (B) Silicon
  • (C) Sulfur
  • (D) Phosphorus

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