Which of the following product will be formed by given reaction?

How many distinct monochlorinated products, (including stereoisomers) may be obtained when the alkane shown below is heated in the presence of ${\mathrm{Cl}}_2$?

Suggest the mechanism of the following reaction:

${\mathrm{CH}}_3 - {\mathrm{CH}}_2\mathrm{OH} \stackrel{\mathrm{HCl}}{\to }{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{Cl}$

Suggest the mechanism of the following reaction,

Suggest the mechanism of the following reaction,

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The reaction of cyclopentyl bromide with sodium cyanide to give cyclopentyl cyanide proceeds faster, if a small amount of sodium iodide is added to the reaction mixture. Can you suggest a reasonable mechanism to explain the catalytic function of sodium iodide?

Suggest the mechanism whether ${\mathrm{S}}_{\mathrm{N}}1$ or ${\mathrm{S}}_{\mathrm{N}}2$ in the following reactions:

${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{X}\stackrel{\mathrm{Z}}{\to }{\mathrm{CH}}_3\mathrm{CH}\left(\mathrm{Z}\right){\mathrm{CH}}_3$