IUPAC name of the given compound is :

1. 3-Phenylpropane

2. Phenyl-1-butane

3. 2-Benzylethane

4. Propyl benzene

The 3° carbon atom in the given structure is :

${\mathrm{H}}_3\mathrm{C} – {\mathrm{CH}}_2 – \mathrm{CH}\left({\mathrm{CH}}_3\right) – {\mathrm{CH}}_2 – {\mathrm{CH}}_3$
$\mathrm{a} \mathrm{b} \mathrm{c} \mathrm{d} \mathrm{e}$  

1. a

2. b

3. c

4. e 

The correct IUPAC name, among the following, is-

The correct IUPAC name is -

1. 2,2-Dimethylpentane 

2. 2-Dimethylpentane

3. 1-Dimethylpentane

4. 2,2-Dimethylethane

The correct IUPAC name of the following structure is

1. 2,4,7-Trimethyloctane

2. 2,5,7-Trimethyloctane

3. 2,3,7-Trimethyloctane

4. All of the above

The  IUPAC name of the following molecule is -

1. 2-Chloro-4-methylpentane

2. 4-Chloro-2-methylpentane

3. 4-Chloro-4-methylpentane

4. 2-Chloro-2-methylpentane

Structure 1.
Structure 2.

The Correct IUPAC names of the above structures are-

1. 2, 3–dimethyl butanal & Heptan–4–one

2. 2, 4–dimethyl butanal & Heptan–2–one

3. 2, 3–dimethyl butanal & Heptan–3–one

4. 1, 2 –dimethyl butanal & Heptan–4–one