$X$ in the above reaction is

How many single and double bonds are present in ethene $(C_2H_4)$? Where are they located?

Which of the following products is not formed during the reaction: $CH_3-CH(CH_3)-CH=CH_2 \xrightarrow{Br_2/aq. NaCl}$?

An alkene $'A'$ on ozonolysis gives a mixture of ethanal and pentan$-3-$one. Write the structure and $IUPAC$ name of $'A'$.

When vinyl and allyl radicals are joined together,we get:

Unbranched alkenes on ozonolysis give $:-$