Chlorine reacts with saturated hydrocarbons at room temperature in the:

Explain the following reactions with chemical equations:
$(i)$ Oxidation
$(ii)$ Hydrogenation
$(iii)$ Substitution

Why are vegetable oils considered healthy compared to vegetable ghee? How are vegetable oils converted into vegetable ghee? Name and define the process involved.

Write true or false for the following statement:
Esters react in the presence of an acid or a base to give back the alcohol and carboxylic acid.

$CH_3-CH_2-OH \xrightarrow{\text{Alkaline } KMnO_4 + \text{Heat}} CH_3-COOH$
In the above given reaction,alkaline $KMnO_4$ acts as:

Convert $CH_{4}$ into $CCl_{4}$ by substituting hydrogen atoms with chlorine atoms in successive reactions. Why is this reaction referred to as a substitution reaction?