A tertiary butyl carbocation is more stable than a secondary butyl carbocation because-

1. + R effect of ${CH}_3$ groups 

2. $-$R effect of $-$ CH₃  groups 

3. Hyperconjugation 

4. $-$l effect of $-$CH₃ groups 

 

1. 2–Bromo-3–methylbutanoic acid

2. 2-Methyl-3-bromobutanoic acid

3. 3-Bromo-2-methylbutanoic acid

4. 3-Bromo-2,3-dimethylpropanoic acid.

The compound that contains only sp³ hybridized carbon atoms is:

1.  HCOOH

2.  ${\left({\mathrm{NH}}_2\right)}_{2}CO$

3.  ${\left({\mathrm{CH}}_3\right)}_{3}COH$

4.  $C{H}_{\mathit{3}}CHO$

The \(C - H\) bond distance is longer in :

The total number of isomers of ${\mathrm{C}}_4{\mathrm{H}}_8$ are-

Which of the following compounds is optically active?

1. Butane

2. 2-Methylpentane

3. 4-Methylpentane

4. 3-Methylhexane

The R and S enantiomers of an optically active compound differ in:

1. Their optical rotation of plane-polarized light.

2. Their reactivity with chiral reagents.

3. Their solubility in achiral reagents.

4. Their melting points.

The number of primary amines of the formula ${\mathrm{C}}_4{\mathrm{H}}_{11}\mathrm{N}$ are:
1. 1
2. 3
3. 4
4. 5

But-2-ene exhibits cis-trans isomerism due to-

1. Rotation around ${\mathrm{C}}_3-{\mathrm{C}}_4$ sigma bond

2. Rotation around  ${\mathrm{C}}_1-{\mathrm{C}}_2$ bond

3. Restricted rotation around C=C bond

4. Rotation around  ${\mathrm{C}}_2-{\mathrm{C}}_3$ double bond

What is the correct increasing order of the C-C bond length?

1. ${\mathrm{C}}_2{\mathrm{H}}_6>{\mathrm{C}}_2{\mathrm{H}}_4>{\mathrm{C}}_6{\mathrm{H}}_6>{\mathrm{C}}_2{\mathrm{H}}_2$

2. ${\mathrm{C}}_2{\mathrm{H}}_2<{\mathrm{C}}_2{\mathrm{H}}_4<{\mathrm{C}}_6{\mathrm{H}}_6<{\mathrm{C}}_2{\mathrm{H}}_6$

3. ${\mathrm{C}}_2{\mathrm{H}}_6>{\mathrm{C}}_2{\mathrm{H}}_2>{\mathrm{C}}_6{\mathrm{H}}_6>{\mathrm{C}}_2{\mathrm{H}}_4$

4. ${\mathrm{C}}_2{\mathrm{H}}_4>{\mathrm{C}}_2{\mathrm{H}}_6>{\mathrm{C}}_2{\mathrm{H}}_2>{\mathrm{C}}_6{\mathrm{H}}_6$