As the molecular mass increases in any homologous series, a gradation in _____.

Observe the above table and answer the following question.

Write the homologous series of alkynes.

Complete the correlation:

Alkene: $\mathrm{C}=\mathrm{C}$:: _____: $\mathrm{C}\equiv \mathrm{C}$.

What is a homologous series? Explain with an example. 

Complete the following table which relates to the homologous series of hydrocarbons.

Write names of the first four homologous series of alcohols:

Select the members of a homologous series from the following compounds and arrange them in increasing order of their molecular weights:

${\mathrm{CH}}_3\mathrm{COOH}, {\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}, {\mathrm{CH}}_3{\mathrm{OCH}}_3, {\mathrm{CH}}_3\mathrm{OH}, {\mathrm{C}}_2{\mathrm{H}}_4, {\mathrm{C}}_2{\mathrm{H}}_6, {\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{OH}, {\mathrm{C}}_3{\mathrm{H}}_4$

Explain the terms with an example: Alkane