Exercise 5

 Give the structure of $\mathrm{X}$.

In which of the following reaction ${\mathrm{CH}}_4$, will be obtained.

$\left(\mathrm{i}\right) {\mathrm{CH}}_3-\mathrm{MgBr}+{\mathrm{CH}}_3-\mathrm{C}\equiv \mathrm{CH}$

$\left(\mathrm{ii}\right)$ 

$\left(\mathrm{iii}\right)\mathrm{ }{\mathrm{CH}}_3-\mathrm{MgBr}+\mathrm{HCN}$

$\left(\mathrm{iv}\right)$ 

Identify the major product.

Which of the following alkyl halide is most reactive towards solvolysis?  

Which of the following statements is correct?

An alkyl halide by formation of its Grignard reagent and heating with water yields propane. What is the original alkyl halide?

By Wurtz reaction, a mixture of methyl iodide and ethyl iodide gives

Correct statement for ${\mathrm{E}}_1$ reaction: