An organic compound $A$ having the molecular formula $C _3 H _8 O$ is a liquid at room temperature. The organic liquid $A$ reacts with sodium metal to evolve a gas which burns causing a little explosion. When the organic liquid A heated with concentrated sulphuric acid at $170^{\circ} C$, it forms a compound B which decolourizes bromine water. The compound B adds on one molecule of hydrogen in the presence of Ni as catalyst to forms compound C which gives substitution reactions with chlorine.
a. What is compound A ?
b. What is compound B ?
c. What type of reaction occurs when A is converted into B ?
d. What is compound C?
e. What type of reaction takes place when $B$ is converted into $C$ ?
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a. A is propanal, $CH _3- CH - CH OH$
b. B is propene, $CH CH = CH$
c. Dehydration reaction.
d. C is propane, $CHCH - CH$
e. Addition reaction.
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