Acrolein is formed when glycerol is heated with -

Which type of reactions are easily performed by alkane and alkene?

What is the stereochemistry of the product formed in the following reaction?

If the heat of hydrogenation of $1$-butene is $30 \ kcal$,what is the heat of hydrogenation of $1,3$-butadiene (in $kcal$)?

Which of the following has the highest heat of hydrogenation?

What are $B$ and $C$ respectively in the following set of reactions?
$C \xleftarrow[\Delta]{Zn} 1,2-\text{dibromopropane}$ $\xrightarrow[\text {(ii) } NaNH_2]{\text {(i) alc. } KOH} A$ $\xrightarrow[\text { Catalyst }]{\text { Lindlar }} B$