Q37 / 160 · TS EAMCET 2022 (20 Jul Shift 1) · Chemistry

The major product of the following reaction is Figure

  • A
    $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_3$
  • B
    $\mathrm{CH}_3 \mathrm{CH}=\mathrm{CH}_2$
  • C
    $\mathrm{CH}_3 \mathrm{C} \equiv \mathrm{CH}$
  • Correct answer
    D
    $\mathrm{CH}_3 \mathrm{COCH}_3$

Solution

When vapours of primary or secondary alcohols are passed over heated $\mathrm{Cu}$ at $573 \mathrm{~K}$ dehydrogenation $\left(-\mathrm{H}_2\right)$ takes place and aldehyde or ketone is formed whereas tertiary alcohols undergo dehydration $\left(-\mathrm{H}_2 \mathrm{O}\right)$.

Hence, the correct answer is option: 'D'.

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