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

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry8.1. Aldehydes and ketones1 Mark
MCQ
An organic compound $‘A’$ has the molecular formula ${C_3}{H_6}O,$ it undergoes iodoform test. When saturated with dil. $HCl$ is gives $‘B’$ of molecular formula ${C_9}{H_{14}}O$. $A$ and $B$ respectively are
  • A
    Propanal and mesitylene
  • B
    Propanone and mesityl oxide
  • ✓
    Propanone and $2,6-$dimethyl $-2, 5-$heptadien$-4-$one
  • D
    Propanone and mesitylene oxide
✓

Answer

Correct option: C.
Propanone and $2,6-$dimethyl $-2, 5-$heptadien$-4-$one
c
(c) The compound $A$ with formula ${C_3}{H_6}O$ gives iodoform test, it is propanone forms a compound $B$ having carbon atoms three times, the number of carbon atoms in propanone, it is $2, 6-$dimethyl$-2, 5-$heptadien$-4-$one.

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