Chemistry MCQs with answers Page - 151

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Q. Which law states that volume is directly proportional to temperature at constant pressure?

  • (A) Boyle's Law
  • (B) Charles's Law
  • (C) Avogadro's Law
  • (D) Graham's Law

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Q. Which element has the highest electronegativity?

  • (A) Oxygen
  • (B) Chlorine
  • (C) Nitrogen
  • (D) Fluorine

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Q. The shape of methane molecule is:

  • (A) Linear
  • (B) Trigonal planar
  • (C) Tetrahedral
  • (D) Bent

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Q. Which of the following is an exothermic process?

  • (A) Melting of ice
  • (B) Boiling of water
  • (C) Combustion of methane
  • (D) Sublimation of iodine

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Q. The IUPAC name of CH₃CH₂OH is:

  • (A) Methanol
  • (B) Ethanol
  • (C) Propanol
  • (D) Ethanal

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Q. Which of the following is an acidic oxide?

  • (A) Na₂O
  • (B) CaO
  • (C) CO₂
  • (D) MgO

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Q. The oxidation number of hydrogen in metal hydrides is:

  • (A) +1
  • (B) -1
  • (C) 0
  • (D) +2

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Q. Which of the following is a saturated hydrocarbon?

  • (A) Ethene
  • (B) Ethyne
  • (C) Benzene
  • (D) Ethane

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Q. The gas used in the Haber process is:

  • (A) Nitrogen and Hydrogen
  • (B) Nitrogen and Oxygen
  • (C) Hydrogen and Oxygen
  • (D) Carbon monoxide and Hydrogen

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Q. Which of the following is a reducing agent?

  • (A) KMnO₄
  • (B) K₂Cr₂O₇
  • (C) H₂
  • (D) O₃

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