Order of Preference of Functional Groups

Q.

The IUPAC name of the compound $C{H}_2(COOH{)}_2$ is

1. Butanedioic acid

2. Stearic acid

3. Propane-1, 2-dioic acid

4. Propane-1, 3-dioic acid

Q.

Which nomenclature is not according to IUPAC system?

1. $\underset{1-bromoprop-2-ene}{Br-C{H}_2-CH=C{H}_2}$

2. 

3. 

4. 

Q.

Which of the following groups is/are always taken as a substituent in IUPAC nomenclature of organic compounds?

1. $-N{H}_2$

2. $\text{-R or alkyl group}$

3. $(-\stackrel{O}{\stackrel{||}{C}}-O-\stackrel{O}{\stackrel{||}{C}}-)$

4. $-N{O}_2$

Q. The decreasing order of priority for the following functional groups is
I. $-C\equiv N$
II. $-CON{H}_2$
III.
IV. $-N{H}_2$

1. (II) > (I) > (IV) > (III)
2. (III) > (IV) > (I) > (II)
3. (I) > (II) > (IV) > (III)
4. (I) > (II) > (III) > (IV)

Q.

(1) $-C\equiv N$ , (2) $-CON{H}_2$ , (3) $-\stackrel{O}{\stackrel{||}{C}}-$, (4)$-CHO$
The decreasing order of priority for the given functional groups (for IUPAC nomenclature) is:

1. 2 > 1 > 4 > 3

2. 3 > 4 > 1 > 2

3. 1 > 2 > 4 > 3

4. 1 > 2 > 3 > 4

Q.

The IUPAC name for

1. Phenylautic acid

2. both a and b are correct

3. Benzyl formic acid

4. 2 - Phenylethanoic acid

Q. Which of the following compounds are named correctly?

1. 4-Chloro-2-(1-hydroxyethyl)pent-1-en-1-one
2. 
   4-ketohex-2, 4-diol
3. 1-(2-Bromocyclopent-4-enyl)ethanone
4. 2-Bromo-5-hydroxycyclopent-3-ene-1-carbonitrile

Q.

Select the compound with incorrect principal group:-

1. $C{H}_3-\stackrel{O}{\stackrel{||}{C}}-\stackrel{O}{\stackrel{||}{C}}-OH$ $\to ketone$

2. $C{H}_3-C{H}_2-\stackrel{O}{\stackrel{||}{C}}-C{H}_2-OH$ $\to alcohol$

3. $C{H}_3-C{H}_2-\stackrel{CN}{\stackrel{|}{CH}}-CHO$ $\to Cyanide/Carbonitrile/nitrile$

4. $C{H}_3-\underset{CN}{\underset{|}{CH}}-C{H}_2-C{H}_2-COOH$$\to Carboxylicacid$

Q. The decreasing order of priority for the following functional groups is
I. -COOH
II. $-S{O}_{3}H$
III. -COOR
IV. -COCl

1. (IV) > (III) > (II) > (I)
2. (I) > (II) > (III) > (IV)
3. (II) > (I) > (III) > (IV)
4. (IV) > (III) > (I) > (II)

Q. The decreasing order of priority for the following functional groups is
I. $-C\equiv N$
II. $-CON{H}_2$
III.
IV. $-N{H}_2$

1. (II) > (I) > (IV) > (III)
2. (III) > (IV) > (I) > (II)
3. (I) > (II) > (IV) > (III)
4. (I) > (II) > (III) > (IV)

Q. The IUPAC name of the compound given below is:

1. 4-formylbenzoic acid
2. 4-formylcyclohexane carboxylic acid
3. 4-carboxylcyclohexanal
4. 4-oxobenzoic acid