NEET MCQs with answers Page - 28

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Q. Which of the following is an alkali metal?

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

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Q. Avogadro's number is:

  • (A) 6.022 × 10²¹
  • (B) 6.022 × 10²²
  • (C) 6.022 × 10²³
  • (D) 6.022 × 10²⁴

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Q. The oxidation state of oxygen in H₂O₂ is:

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

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Q. The molecular formula of methane is:

  • (A) CH₃
  • (B) CH₄
  • (C) C₂H₄
  • (D) C₂H₆

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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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