When hydrolyzed with aqueous KOH, compounds that undergoes racemization are:

(i)		(ii)	CH3CH2CH2Cl
(iii)		(iv)

The end product (C) in the below-mentioned reaction is:
$H_3C-Br\xrightarrow{\bf KCN }A\xrightarrow{ \bf H_3O^+~~}B\xrightarrow[\bf\text{Ether}]{~~LiAlH_4~~}C$

Which of the following compounds undergoes nucleophilic substitution reaction most easily?

1.		2.
3.		4.

Consider the reactions:

The correct order of increasing C-X bond reactivity toward nucleophiles among the following is:

I		II
III	$\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{X}$	IV	$\left(\mathrm{CH}_3\right)_2 \mathrm{CH}-\mathrm{X}$

Which of the following reactions cannot form new carbon-carbon bonds?

1. Reimer-Tiemann reaction

2. Cannizaro reaction

3. Wurtz reaction

4. Friedel-Crafts acylation

$C_6H_5CH_2Br \xrightarrow[2.~H_3O^+] {1.Mg,Ether}~\mathrm X,$
The product 'X' in the above reaction is:
1. $\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{OH}$
2. $\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_3$
3. $\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{C}_6 \mathrm{H}_5$
4. $\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{OCH}_2 \mathrm{C}_6 \mathrm{H}_5$

For the following: 
(i) I^- 
(ii) Cl^- 
(iii) Br^- 
The increasing order of nucleophilicity would be:

1. I^-<Br^-<Cl^-

2. Cl^-<Br^-<I^- 

3. I^- <Cl^-<Br^-

4. Br^-<Cl^-<I^-