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8.1. Aldehydes and ketones — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry8.1. Aldehydes and ketones1 Mark
MCQ
Schiff's reagent is
  • ✓
    Magenta colour solution decolourised with sulphurous acid
  • B
    Ammoniacal cobalt chloride solution
  • C
    Ammoniacal manganese sulphate solution
  • D
    Magenta solution decolourised with chlorine
✓

Answer

Correct option: A.
Magenta colour solution decolourised with sulphurous acid
a
Schiff's Reagent is an aqueous solution of magenta or pink coloured Rosaniline Hydrochloride which gets decolourised when $SO _2$ is passed through it,That's why used as a distinction test for aldehydes.

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