Exercise

How many methylene units are extra in the formula of the fourth member than the third member of the homologous series of alcohols?

How many methylene units are less in the formula of the second member than the third member of the homologous series of alkenes?

Rectified spirit is an aqueous solution which contains about _____ of ethanol:

By how many $-{\mathrm{CH}}_2-$ (methylene) units do the formulae of the first two members of homologous series of alkanes, methane $\left({\mathrm{CH}}_4\right)$ and ethane $\left({\mathrm{C}}_2{\mathrm{H}}_6\right)$ differ? Similarly, by how many $-{\mathrm{CH}}_2-$ units do the neighbouring members ethane $\left({\mathrm{C}}_2{\mathrm{H}}_6\right)$ and propane $\left({\mathrm{C}}_3{\mathrm{H}}_8\right)$ differ from each other?

The general formula of the homologous series of alkanes is ${\mathrm{C}}_{\mathrm{n}}{\mathrm{H}}_{2\mathrm{n}+2}$. Write down the molecular formula of the 8^th and 12^th members using this.

Propane $\left({\mathrm{C}}_3{\mathrm{H}}_8\right)$ is one of the combustible components of L.P.G. Write down the combustion reaction for propane $\left({\mathrm{C}}_3{\mathrm{H}}_8\right)$.

The structural formula of a monomer is given below. Write the structural formula of the homopolymer formed from them.

What are the chemical substances that make cloth, furniture and elastic objects?