Chemistry MCQs with answers Page - 153

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Q. The catalyst used in the Contact process is:

  • (A) Iron
  • (B) Nickel
  • (C) Vanadium pentoxide
  • (D) Platinum

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Q. Which of the following has maximum boiling point?

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

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Q. The number of electrons present in Mg²⁺ ion is:

  • (A) 10
  • (B) 12
  • (C) 14
  • (D) 24

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Q. Which of the following is an example of a homogeneous mixture?

  • (A) Milk
  • (B) Sand and water
  • (C) Salt solution
  • (D) Smoke

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Q. The empirical formula of glucose (C₆H₁₂O₆) is:

  • (A) CHO
  • (B) CH₂O
  • (C) C₂H₄O₂
  • (D) C₃H₆O₃

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Q. Which of the following compounds exhibits hydrogen bonding?

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

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Q. The oxidation state of chromium in K₂Cr₂O₇ is:

  • (A) +3
  • (B) +4
  • (C) +6
  • (D) +7

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Q. Which of the following is a ketone?

  • (A) Methanal
  • (B) Ethanal
  • (C) Propanone
  • (D) Methanoic acid

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Q. Which of the following has the maximum electronegativity?

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

A

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Q. The oxidation number of chlorine in KClO₃ is:

  • (A) +3
  • (B) +5
  • (C) +7
  • (D) -1

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