Write with equation the chemical reaction between Ethane and Bromine.

Write the condition for the reaction of addition of hydrogen to ethylene. Write the balanced chemical equation of the reaction.

Mention one use of CNG. 

Given below are two statements:

Statement-I : $2$ -methylbutane on oxidation with ${\mathrm{KMnO}}_4$ gives $2$ -methylbutan-$2$-ol.

Statement-II : $\mathrm{n}$ -alkanes can be easily oxidised to corresponding alcohol with ${\mathrm{KMnO}}_4$.

Choose the correct option :

_____ juice is used to make the invisible ink.

Complete the following sentence using the words given in the box.

The conversion of ethene to ethane is a _____ reaction.