Which is incorrect about enantiomorphs?

(1) They rotate the plane of polarized light in different directions

(2) They have mostly identical physical properties

(3) They have same configuration

(4) They have different biological properties

The isomeric cis-2-Butene and trans-2-Butene can be distinguished on the basis of:

1. Their colour.

2. Their reduction products.

3. The products they give on ozonolysis..

4. The products they give on addition to bromine.

Number of optically active forms possible for a compound with the following formula are:

CHOCHOHCHOHCHOHCH₂OH

1. 2

2. 4

3. 3

4. 8

The intermediate during the addition of HCl to propene in the presence of peroxide is:

1. $C{H}_3\stackrel{\bullet }{C}HC{H}_{2}Cl$
$$

2. $C{H}_3\stackrel{+}{C} HC{H}_3$
$$

3. $C{H}_{3}C{H}_2\stackrel{\bullet }{C}{H}_2$
$$

4. $C{H}_{3}C{H}_2\stackrel{+}{C}{H}_2$

The number of isomers for the compound with molecular formula C₂BrCIFI is:

(1) 3

(2) 4

(3) 5

(4) 6

Geometrical isomerism is not shown by:

1. 

2. 

3. ${\mathrm{CH}}_2 = \mathrm{C}\left(\mathrm{Cl}\right){\mathrm{CH}}_3$

4. ${\mathrm{CH}}_3 - \mathrm{CH} = {\mathrm{CH}}_{} - \mathrm{CH} = {\mathrm{CH}}_2$

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

1. 1               2. 2

3. 3               4. 4

The enol form of acetone after treatment with D₂O gives:

1. $\mathrm{OD}$
$|$
${\mathrm{CH}}_3—\mathrm{C}={\mathrm{CH}}_2$

2. $\mathrm{O}$
$\left|\right|$
${\mathrm{CH}}_3—\mathrm{C}—{\mathrm{CD}}_3$

3. $\mathrm{OH}$
$|$
${\mathrm{CH}}_2=\mathrm{C}—{\mathrm{CH}}_2\mathrm{D}$

4. $\mathrm{OD}$
$|$
${\mathrm{CD}}_2=\mathrm{C}—{\mathrm{CD}}_3$

Maleic and fumaric acids are:

1. tautomers                 

2. geometrical isomers

3. chain isomers             

4. functional isomers

Isomers which can be interconverted through rotation around a single bond are:

1. Conformers             

2. Diastereomers

3. Enantiomers             

4. Positional isomers