Pure methane can be prepared by

Which of the following compounds do not undergo addition reactions?

Identify the decreasing order of boiling point of the following alkanes:
$(i)$ $n$-pentane
$(ii)$ Isopentane
$(iii)$ Neopentane

In which of the following reactions does the carbon number not change on product formation?
$(i)$ Hydrogenation
$(ii)$ Alkyl halide reduction
$(iii)$ Wurtz reaction
$(iv)$ Decarboxylation
$(v)$ Kolbe reaction

One of the products formed in the following reaction is:
$C_6H_{11}MgBr + C_6H_{11}NH_2 \rightarrow ?$

Write about the Wurtz reaction or describe the preparation of alkanes from alkyl halides via the Wurtz reaction,including examples and its limitations.