NEET MCQs with answers Page - 31

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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

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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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Q. Which of the following is a transition element?

  • (A) Sodium
  • (B) Calcium
  • (C) Iron
  • (D) Aluminium

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Q. The hybridization of carbon in ethyne (C₂H₂) is:

  • (A) sp
  • (B) sp²
  • (C) sp³
  • (D) dsp²

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Q. Which of the following is an example of a covalent compound?

  • (A) NaCl
  • (B) MgO
  • (C) H₂O
  • (D) CaCl₂

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Q. The molecular formula of benzene is:

  • (A) C₆H₆
  • (B) C₆H₁₂
  • (C) C₆H₁₄
  • (D) C₇H₈

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Q. The IUPAC name of CH₃COOH is:

  • (A) Methanoic acid
  • (B) Ethanoic acid
  • (C) Propanoic acid
  • (D) Ethanol

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Q. The bond angle in methane is:

  • (A) 90°
  • (B) 104.5°
  • (C) 109.5°
  • (D) 120°
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