JEE CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS

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In the Victor-Meyer's test, the colors given by

1^{\circ}, 2^{\circ}

and

3^{\circ}

alcohols are respectively.

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Correct option: B

Red, Blue, Colourless

The correct answer is B (Red, Blue, Colourless) because in the Victor-Meyer's test, primary alcohols give a red color, secondary alcohols give a blue color, and tertiary alcohols give a colorless solution.

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Assertion (A): Isopropyl alcohol is preferred over ethanol.

Reason (R): Isopropyl alcohol is used as an antiseptic for skin before giving injections. Germinated Barley (an enzyme) is a source of enzyme: The process of converting alkyl halides into alcohols involves The b.p. of alcohols are….than corresponding thiols. Which of the following can not be used to oxidise primary alcohols to aldehydes Conc.

\mathrm{H}_2 \mathrm{SO}_4

heated with excess of

\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}

140^{\circ} \mathrm{C}

to form