Organic Chemistry Nomenclature and Functional Group Identification

Q1 Which of the following is an acceptable structure of Hepta-3,6-dien-1-yne?

(i) [Skeletal structure i]

(ii) [Skeletal structure ii]

(iii) [Skeletal structure iii]

(iv) [Skeletal structure iv]

(A) 1 and 3 both (B) 1 only

(C) 4 only (D) 2 and 4 both

Q2 Which of the following statement(s) is/are correct?

[Image of molecule with formula $C_9H_{10}O$]

(A) Double bond equivalent (DBE) value of the compound is 4

(B) Total 3 different functional groups are present

(C) Correct IUPAC name is 2-(prop-2-ynyl) pent-4 enal

(D) Correct IUPAC name is 2-(propyl) pent-4-ynal

Q3 Among the following compounds 3,4 dimethyl hexane is:

(i) [Structure i] (ii) [Structure ii]

(iii) [Structure iii] (iv) [Structure iv]

(A) (i) (B) (ii)

(C) (iii) (D) (iv)

Q4 Find the number of different type of functional groups

[Image of a complex bicyclic compound containing aldehyde, alcohol, ketone, carboxylic acid, amine, and alkene groups]

(A) 8 (B) 7

(C) 6 (D) 9

Q5 Correct IUPAC name of the following compound is

[Skeletal structure of an alkane chain]

(A) 4-(1,1-dimethylethyl)-5-ethyloctane

(B) 5-ethyl-4-(1,1-dimethylethyl) octane

(C) 5-(1,1-dimethylethyl)-4-ethyloctane

(D) 5-ethyl-5-(1,1-dimethylethyl) octane

Q6 What is correct IUPAC name of

$$CH_3 - N - \begin{matrix} CH_3 \\ | \\ C \\ | \\ CH_3 \end{matrix} - CH_2 - CH_3$$

[Attached to the nitrogen is $CH_3$ and to the carbon is $C_2H_5$]

(A) 1-ethyl-N,N,1-trimethylpropan-1-amine

This question includes visual content: The image contains six chemical chemistry problems (Q1-Q6). Q1 shows four skeletal structures of C7 hydrocarbons with double and triple bonds. Q2 shows a complex organic molecule with an aldehyde, alkene, and alkyne group. Q3 shows four branched skeletal structures for dimethyl hexane isomers. Q4 shows a complex bicyclic structure with multiple functional groups including amine, aldehyde, hydroxy, ketone, and carboxylic acid. Q5 shows an alkane chain with ethyl and tert-butyl substituents. Q6 shows a tertiary amine structure labeled with methyl and ethyl groups.