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JEE CHEMISTRY MCQ: ALDEHYDES & KETONES & CARBOXYLIC ACIDS

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Magenta is:

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Correct option: C

\mathrm{p - }

rosaniline hydrochloride

Option C (

\mathrm{p - }

rosaniline hydrochloride) is correct because Magenta is

\mathrm{p - }

rosaniline hydrochloride, a dye that is decolorized by

{\mathrm{H}_2}\mathrm{S}{\mathrm{O}_3}

to give Schiff’s reagent.

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By passing water gas

\left( {\mathrm{CO} + {\mathrm{H}_2}} \right)

through an electric discharge at low pressure, we get: Addition of alcohols to aldehydes and ketones takes place in presence of dry

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(i) Protonates the oxygen of the carbonyl compounds

(ii) Increases the electrophilicity of the carbonyl carbon

(iii) Removes the excess moisture from the reaction

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{C_4}{H_8}O