Reaction of isobutylene with concentrated $H_2SO_4 + SO_3$ (oleum) gives:

$2$-methyl-$2$-butene will be represented as:

The reaction,$H_2C=CH_2$ (Ethylene) $+ H_2O$ (water) $\xrightarrow{H_3PO_4, 300 \ ^\circ C/60 \ atm}$ $C_2H_5OH$ (Ethyl alcohol) is called:

What is the product formed in the given reaction?

Which of the following does not follow Markownikoff’s rule?

The $IUPAC$ names of some alkenes are given below. Determine the correct stability order: $A$. $2$-Methylbut-$2$-ene, $B$. $cis$-But-$2$-ene, $C$. $2,3$-Dimethylbut-$2$-ene, $D$. Prop-$1$-ene.