$A$ gas formed by the action of alcoholic $KOH$ on ethyl iodide,decolorises alkaline $KMnO_4$ solution. The gas is

The disappearance of the characteristic purple colour of $KMnO_4$ in its reaction with an alkene is the test for unsaturation. It is known as

Consider the above chemical reaction. The total number of stereoisomers possible for product $'P'$ is $.....$

What is the major product formed when $1, 3$-butadiene reacts with $1 \ mol$ of $HCl$ at high temperature ($100^{\circ}C$ or above)?

$A$ hydrocarbon $X$ adds one mole of hydrogen to give another hydrocarbon and decolourises bromine water. $X$ reacts with $KMnO_4$ in the presence of acid to give two moles of the same carboxylic acid. The structure of $X$ is:

What are the suitable conditions for the following transformation?