MCQ
Which of the following is not chiral?
- A${2-}$ Hydroxypropanoic acid
- B${2-}$ Butanol
- C$2,{3-}$Dibromopentane
- ✓${3-}$Bromopentane

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$(i)$ forms aldehydes on ozonolysis followed by the hydrolysis.
$(ii)$ when vaporized completely $1.53\, \mathrm{~g}$ of $\mathrm{A}$, gives $448\, \mathrm{~mL}$ of vapour at $STP.$
The number of carbon atoms in a molecule of compound $A$ is ...... .
$2 C ( s )+ H _2( g ) \longrightarrow C _2 H _2( g ) \ \ \ \ \ \Delta H =225 \ kJ mol ^{-1} $
$2 C ( s ) \longrightarrow 2 C ( g )\ \ \ \ \ \ \Delta H =1410 \ kJ mol ^{-1} $
$H _2( g ) \longrightarrow 2 H ( g ) \ \ \ \ \ \ \Delta H =330 \ kJ mol ^{-1}$