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Most Important Selected Qs for JEE AdvancedChemistryp Block Elements (Group 13 & 14)

SiO ₂ is attacked by which one / ones of the following?

Options

  1. AHF
  2. Bconc. HCl
  3. Chot NaOH
  4. DFluorine

Correct answer

D. Fluorine

Step-by-step solution

Hint: SiO ₂( ~s )+ F ₂( ~g ) SiF ₄( aq .)+ O ₂( ~g ) SiO ₂( ~s )+6 HF (aq.) H ₂ SiF ₆ (aq.) +2 H ₂ O ( ) SiO ₂( ~s )+2 NaOH ( aq. ) Na ₂ SiO ₃( ~s )+ H ₂ O ( )

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