Which of the following alkenes gives only acetic acid on oxidation with potassium permanganate solution?

Which of the following reagents cannot be used for the experimental reduction of a functional group?

Consider the following reactions:
$X + HCl \xrightarrow{\text{Anhydrous } AlCl_3} C_2H_5Cl$ (Addition)
$Y \xrightarrow{\text{Anhydrous } ZnCl_2 / HCl} C_2H_5Cl$ (Substitution)
$Y$ can be converted to $X$ on heating with $...$ at $...$ temperature:

Write $IUPAC$ names of the products obtained by the ozonolysis of the following compounds:
$(i)$ $Pent-2-ene$
$(ii)$ $3,4-Dimethylhept-3-ene$
$(iii)$ $2-Ethylbut-1-ene$
$(iv)$ $1-Phenylbut-1-ene$

Which of the following is formed when propene is heated with bromine at high temperature?

When $HCl$ is treated with propene in the presence of sodium peroxide,the major product obtained is