R.R. Mishra Solutions for Exercise 3: FORMATIVE ASSESSMENT QUESTIONS FOR CCE

Write the molecular formula of heptane.

What is an alkyl group? How is an alkyl group different from its parent alkane?

Write the notation and name of the alkyl group that corresponding to methane.

Name the compound ${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_3$. Is it saturated or unsaturated hydrocarbons.

Define homologous series.

Justify that ${\mathrm{CH}}_4$ and ${\mathrm{C}}_3{\mathrm{H}}_8$ are the formula of homologues of ethane $\left({\mathrm{C}}_2{\mathrm{H}}_6\right)$.

Which one is the lower homologue of propane - ${\mathrm{CH}}_4$ or ${\mathrm{C}}_2{\mathrm{H}}_6$?

Homologues differ by $-{\mathrm{CH}}_2$ unit in their molecular formula. On this basis, identify various types of homologues from the following:

${\mathrm{CH}}_4, {\mathrm{CH}}_3\mathrm{OH}, {\mathrm{C}}_2{\mathrm{H}}_6, {\mathrm{CH}}_3\mathrm{CHO}, {\mathrm{CH}}_3\mathrm{COOH}, {\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}, {\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{COOH}, {\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CHO}$