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8.2 Organic chemistry isomerism — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry8.2 Organic chemistry isomerism1 Mark
MCQ
Isomers of propionic acid are
  • ✓
    $HCOO{C_2}{H_5}$ and $C{H_3}COOC{H_3}$
  • B
    $HCOO{C_2}{H_5}$ and ${C_3}{H_7}COOC{H_3}$
  • C
    $C{H_3}COOC{H_3}$ and ${C_3}{H_7}OH$
  • D
    ${C_3}{H_7}OH$and $C{H_3}COC{H_3}$
✓

Answer

Correct option: A.
$HCOO{C_2}{H_5}$ and $C{H_3}COOC{H_3}$
a
Propanoic acid: $CH _3 CH _2 COOH$ Meet formula $= C _3 H _6 O$

$(A) \,HCOOC _2 H _2$ meet formula $= c _3 H _6 O _2$

$CH _3COOCH_3$ Meet formula $= C _3 H _6 O _2$

Hence, option $A$ is correct.

$(B) \,H - COOC _2 H _5$ and $C _3 H _7COOH$

$HCOOC_2 H _5$ Meet formula $= C _3 H _6 O _2$

$C _3 H _4 COOH$ meet formula $= C _4 H _8 O _2$

Hence, option $B$ is incorrect.

Similarly, options $C$ and $D$ are incorrect.

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