The decreasing order of the stability of the given ions is-

(I).		(II).
(III).

 

1.	I>II>III	2.	II>III>I
3.	III>I>II	4.	II>I>III

The maximum number of stereoisomers possible for 3-hydroxy-2-methyl butanoic acid is/are :

1. 1               

2. 2

3. 3               

4. 4

Ether and benzene can be separated by-
1. Filtration
2. Distillation
3. Crystallization
4. Sublimation

The number of isomeric structures for C₂H₇N would be:
1. 4
2. 3
3. 2 
4. 1

The IUPAC name of the above mentioned compound is - 

1. 3,3-Diethyl-4-methyl-5-(methylethyl)octane

2. 3,3-Diethyl-5-isopropyl-4-methyloctane

3. 4-Isopropyl-5-methyl-6,6-diethyloctane

4. 6,6-Diethyl-4-isopropyl-5-methyloctane

$\stackrel{\stackrel{\mathrm{H}}{|}}{\mathrm{C}}{\mathrm{H}}_2-\stackrel{\stackrel{\mathrm{Cl}}{|}}{\mathrm{C}}{\mathrm{H}}_2\underset{\mathrm{alk}.}{\overset{\mathrm{NaOH}}{\to }}{\mathrm{CH}}_2={\mathrm{CH}}_2$

Most probable mechanism for this reaction is-

1. E1                                         

2. E2

3. $E{1}_{CB}$                                     

4. $\alpha$ elimination

The general molecular formula, that represents the homologous serious of alkanols is-

1. $C_n{H}_{2n}{O}_2$

2. $C_n{H}_{2n}O$

3. $C_n{H}_{2n+1}O$

4. $C_n{H}_{2n+2}O$

In an S_N1 reaction on chiral center, there is:

1. 100% racemization

2. Inversion is more than retention leading to partial racemization. 

3. 100% retention

4. 100% inversion

Fischer projection indicates-

1. Horizontal substituents above the plane.

2. Vertical substituents above the plane.

3. Both horizontal and vertical substituents below the plane.

4. Both horizontal and vertical substituents above the plane.

The pair that represents chain isomers is-