Hydrolysis of silicon chloride with water Steps:

• Silicon chloride (SiCl₄) reacts with water to undergo hydrolysis.
• The reaction is SiCl₄ + 4H₂O → Si(OH)₄ + 4HCl.
• HCl produced forms steamy fumes due to its reaction with atmospheric moisture.
• Si(OH)₄ (silicic acid) forms a white gelatinous precipitate.

Why B is correct:

• Hydrolysis equation shows both HCl (steamy fumes) and Si(OH)₄ (precipitate) form simultaneously.

Why the others are wrong:

• A: Reaction is vigorous with visible changes, not inert.
• C: Ignores steamy fumes from HCl evolution.
• D: Ignores precipitate from silicic acid formation.

Final answer: B