Which of the following reagents will convert glycerol into acrolein?

Most of the hydrocarbons from petroleum are obtained by

Give the reactions for the following conversions:
$1$. Polyvinyl chloride from ethyne
$2$. Methane from propyne
$3$. $2,3-$Dimethylbutane from propene

The product$(s)$ from the above reaction will be

In the hydrocarbon,$CH_3(1) - CH(2) = CH(3) - CH_2(4) - C(5) \equiv CH(6)$,the state of hybridization of carbons $1, 3$ and $5$ are in the following sequence:

In laboratory burners,we use