Question

A sample of chloroform, before using as an anaesthetic, is tested ______.

विकल्प

• by Fehling solution

• by ammonical cuprous chloride

• by ammonical silver nitrate

• after boiling with alc. KOH, with silver nitrate

Answer 1

A sample of chloroform, before using as an anaesthetic, is tested after boiling with alc. KOH, with silver nitrate.

Explanation:

Chloroform is tested after boiling with alcoholic KOH and then adding silver nitrate.

• Boiling with alc. KOH breaks chloroform into chloride ions (Cl⁻).
• Adding AgNO₃ gives a white precipitate of AgCl, confirming the presence of chloroform.