Nomenclature of Aromatic Compounds

Q.

Make a list of all the functional isomers of ${\mathrm{C}}_4{\mathrm{H}}_8\mathrm{O}$.

Q. NO. OF ISMERS FOR C4H6

Q.

IUPAC name of m - cresol is . . .
(a) 3-methylphenol
(b) 3-chlorophenol
(c) 3-methoxyphenol
(d) benzene-1, 3-diol

Q.

Write the IUPAC name of ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{COOH}$.

1. Ethyl formic acid

2. Ethyl carboxylic acid

3. Ethane methanoic acid

4. Propionic acid

Q. What is the correct IUPAC name of the following compound?

1. o-Nitro-m-bromotoluene
2. 3-Bromo-6-nitrotoluene
3. 4-bromo-1-methyl-2-nitrobenzene
4. 4-Bromo-2-methyl-1-nitrobenzene

Q. What is the correct IUPAC name for the given compound?

1. Benzene-1, 3-dicarbaldehyde
2. Benzene-1, 4-dicarbaldehyde
3. 1, 3-dicarbaldehydebenzene
4. 1, 4-dicarbaldehydebenzene

Q. Number of secondary carbon atoms present in the given compounds are respectively:

1. 6, 4, 5
2. 4, 5, 6
3. 5, 4, 6
4. 6, 2, 1

Q.

Name the following halides according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:

(i) (CH₃)₂CHCH(Cl)CH₃

(ii) CH₃CH₂CH(CH₃)CH(C₂H₅)Cl

(iii) CH₃CH₂C(CH₃)₂CH₂I

(iv) (CH₃)₃CCH₂CH(Br)C₆H₅

(v) CH₃CH(CH₃)CH(Br)CH₃

(vi) CH₃C(C₂H₅)₂CH₂Br

(vii) CH₃C(Cl)(C₂H₅)CH₂CH₃

(viii) CH₃CH=C(Cl)CH₂CH(CH₃)₂

(ix) CH₃CH=CHC(Br)(CH₃)₂

(x) p-ClC₆H₄CH₂CH(CH₃)₂

(xi) m-ClCH₂C₆H₄CH₂C(CH₃)₃

(xii) o-Br-C₆H₄CH(CH₃)CH₂CH₃

Q. Name the following compound according to IUPAC?

1. 5-cyano-2-formylbenzamide
2. 6-carbamoyl-4-cyanobenzaldehyde
3. 5-cyano-2-formylbenzaldehyde
4. 2-carbamoyl-4-cyanobenzaldehyde

Q. Write the correct IUPAC name of the following compound.

1. 3, 3, 3-tribromo-1, 1, 1-tris(3-iodophenyl)propane
2. 1, 1, 1-tribromo-3, 3, 3-tris(3-iodophenyl)propane
3. 1, 1, 1-tris(3-iodophenyl)-3, 3, 3tribromopropane
4. 3, 3, 3-tris(3-iodophenyl)-1, 1, 1-tribromopropane

Q.

In the alkane H₃C–CH₂–C(CH₃)₂–CH₂–CH(CH₃)₂, identify 1°, 2°, 3° carbon atoms and give the number of H atoms bonded to each one of these.

Q. How can we identify that it's a phenyl or benzene when naming a compound??

Q. The IUPAC names of the following structures are :

1. (a) is Methylenebenzene and (b) is dimethylbenzene
2. (a) is Methylbenzanoate and (b) is dimethylbenzene
3. (a) is Methylbenzene and (b) is 1, 3-Dimethylbenzene
4. (a) is Methylbenzanoate and (b) is 1, 3-dimethylbenzene

Q. Name the given aromatic compound according to IUPAC.

1. 1-Nitrobromobenzene
2. 1-Nitro-4-Bromobenzene
3. 1-Bromonitrobenzene
4. 1-Bromo-4-nitrobenzene

Q. Write the IUPAC name of the following compound.

1. 1, 1, 1-tribromo-3, 3, 3-triphenylpropane
2. 3, 3, 3-tribromo-1, 1, 1-triphenylpropane
3. 1, 1, 1-triphenyl-3, 3, 3-tribromopropane
4. 3, 3, 3-triphenyl-1, 1, 1-tribromopropane

Q. The IUPAC name of $C_6{H}_{5}COCl$ is
(2006)

1. Benzoyl chloride
2. Benzene chloroketone
3. Chloro phenyl ketone
4. Benzene carbonyl chloride

Q. The IUPAC name(s) of the following compound is/are:

1. 4-chlorotoluene
2. 4-methylchlorobenzene
3. 1-chloro-4-methylbenzene
4. 1-methyl-4-chlorobenzene

Q. The correct IUPAC name of the given compound is

1. $1-$ Benzene$-2,3-$ dibromopentane
2. $2,3-$ Dibromo$-1-$phenylpentane
3. 1-(2, 3-dibromopentane)benzene
4. $1-$ Phenyl$-2,3-$dibromopentane

Q. An organic compound having molecular formula $C_3{H}_{6}O$, gives orange-red precipitate with 2, 4-dinitrophenyl hydrazine, but does not reduce Tollen's reagent. Give IUPAC name and structural formula of the compound.

Q.

How many structural isomers can you write for all the isomeric alcohols having the molecular formula $C_4{H}_{10}O$.

1. 3

2. 6

3. 4

4. 5

Q. Which alkyl halide has the highest density and why ?

Q. The IUPAC names of the following structures are :

1. (a) is Methylenebenzene and (b) is dimethylbenzene
2. (a) is Methylbenzanoate and (b) is 1, 3-dimethylbenzene
3. (a) is Methylbenzene and (b) is 1, 3-Dimethylbenzene
4. (a) is Methylbenzanoate and (b) is dimethylbenzene

Q. Write the correct IUPAC name of the following compound.

1. 3, 3, 3-tribromo-1, 1, 1-tris(3-iodophenyl)propane
2. 1, 1, 1-tribromo-3, 3, 3-tris(3-iodophenyl)propane
3. 1, 1, 1-tris(3-iodophenyl)-3, 3, 3tribromopropane
4. 3, 3, 3-tris(3-iodophenyl)-1, 1, 1-tribromopropane

Q. The strongest ortho-para and strongest meta-direct groups respectively are :

1. $-N{O}_2$ and $-N{H}_2$
2. $-N{H}_2$ and $-N{O}_2$
3. $-N{H}_2$ and $-CON{H}_2$
4. $-X$ and $-CON{H}_2$

Q. Name the following aromatic hydrocarbon according to IUPAC.

1. 1, 2-dimethylbenzene
2. dimethylbenzene
3. Benzene-1, 2-dimethyl
4. methyl toluene

Q. The correct IUPAC name of the following compound is:

1. 1-bromo-2-chloro-5-fluoro-4-iodobenzene
2. 2-chloro-1-bromo-5-fluoro-4-iodobenzene
3. 1-bromo-2-chloro-4-iodo-5-fluorobenzene
4. 4-bromo-5-chloro-2-fluoro-1-iodobenzene

Q. The IUPAC name of $C_6{H}_{5}COCl$ is
(2006)

1. Benzene chloroketone
2. Benzoyl chloride
3. Chloro phenyl ketone
4. Benzene carbonyl chloride

Q. Paracetamol is:

1. methyl salicylate
2. phenyl salicylate
3. N-acetyl p-amino phenol
4. acetyl salicylic acid

Q.

Which of the following is (are) secondary suffix?

1. Sulpho

2. Carbamoyl

3. Cyano

4. isocyanide

Q. Mention the IUPAC name for the given structure.

1. benzene-1, 2-dicarboxylic acid
2. benzenedicarboxylic acid
3. dibenzoic acid
4. benzene-1, 2-dioic acid