The IUPAC name of  $$\begin{gathered} {\mathrm{CH}}_3—\mathrm{CH}—\mathrm{CH}—\mathrm{CH}—\mathrm{CHO} \\ | | | \\ {\mathrm{CH}}_3 \mathrm{OH} \mathrm{OH} \end{gathered}$$ is:

(1) 2, 3-Dihydroxy-4-methylpentanal

(2) 1-oxo-2,3-Dihydroxy-4-methylpentane

(3) 2,3-Dihydroxy-4 methylpentanone

(4) 1, 2-Dihydroxy-3-methylbutanecarbaldehyde

The IUPAC name of CH3 -CHOH- CH₂- CO-CH₃ is:

(1) 2-Hydroxypentan-4-one

(2) 4-Hydroxypentan-2-one

(3) 4-oxopentan-2-ol

(4) 2-oxopentan-4-ol

The IUPAC name of CH₃-CHCl-CHBr-CHOH-CH₃ is:

(1) 3-Bromo-4-chloropentan-2-o1

(2) 3-Bromo-2-chloro-4-hydroxypentane

(3) 3-Bromo-2-chloropentane-4-ol

(4) none of these

The IUPAC name ofCH₃ — CH₂— $\underset{\mathrm{OH}}{\overset{\mathrm{Br}}{\underset{\left|}{\overset{\right|}{\mathrm{C}}}}} -\stackrel{\mathrm{Cl}}{\stackrel{|}{\mathrm{CH}}}$ — CH₂ - Cl is:

(1) 3-Bromo-4, 5-dichloropentan-3-ol

(2) 3-Bromo-1, 2-dichloro-3-hydroxypentane

(3) 3-Bromo-1, 2-dichloropentan-3-ol

(4) 3-Bromo-4, 5-dichloro-3-hydroxypentane

\(CH_3-CH-CH_2-O-C_2H_5\\ ~~~~~~~~~~~~~~|\\ ~~~~~~~~~~~~~OH\)    

1. 1-Ethoxypropan-2-ol

2. 3-Ethoxypropan-2-ol

3. 1-Ethoxy-2-hydroxypropane

4. None of these

The IUPAC name of  is:

(1) N, N-Dimethyl aminobenzene

(2) N, N-Dimethyl benzenamine

(3) (1) and (2) both are correct

(4) none of these

The IUPAC name of  is:

1. 2, 6-Dimethylhepta-2, 5-dienoic acid

2. 3, 7-Dimethylhepta-2, 5-dienoic acid

3. 1-Hydroxy-2, 6-dimethylhepta-2, 5-dienone

4. None of the above

The IUPAC name of  is : 

1. 2-Phenyl ethanone

2. 1-Phenyl ethanone

3. 1-(Oxoethyl)benzene

4. 1-(Ethyloxo)-benzene

Ph-CH=CH-COOH 

The IUPAC name is:

1. 3-Phenyl prop-2-enoic acid

2. 3-Phenol prop-1-enoic acid

3. 3-Carboxy-prop-1-ene benzene

4. But-2-enoic acid

The IUPAC name iS'

1. Chloromethylbenzene 

2. Chlorophenylmethane

3. (1) and (2) both

4. None of the above