Nomenclature of Unsaturated Compounds

Q. Which amongst the following is the IUPAC name of ${\mathrm{CH}}_3-C\equiv C-{\mathrm{CH}}_3$ ?

1. 2-butyne
2. 3-butyne
3. 2-hexyne
4. 3-propyne

Q. The IUPAC name of the compound CH3−CH2−CH=CH2 is

1. but-1-ene
2. but-3-ene
3. but-2-ene

Q. The IUPAC name of the compound CH3−CH3|CH−CH2−CH=CH−CH3 is .

1. 5-methylhex-3-ene
2. 2-methylhex-4-ene
3. 5-methylhex-2-ene

Q.

Write the IUPAC name of ${\mathrm{CH}}_2\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}}_2-\mathrm{Br}$

Q.

The IUPAC name of the following compound is?

$C{H}_3-C{H}_2-C{H}_2-\underset{C{H}_3}{\underset{|}{C}H}-C{H}_2-\stackrel{C{H}_3}{\stackrel{|}{C}H}-C{H}_3$

1. 2, 4-Dimethylheptane

2. 4, 6-Dimethylheptane

3. 2, 4-Methylheptane

4. 2, 3-Ethylheptane

Q. Explain the laboratory preparation of ethyne. [2 marks]

Q. A hydrocarbon with five carbon atoms and a double bond between the second and the third carbon atom is named as .

1. pent-2-ene
2. pent-3-ene
3. hept-2-ene
4. hept-3-ene

Q. is used as the primary suffix in the nomenclature of the compound $C{H}_2=CH-C{H}_2-C{H}_3$.

1. -ane
2. -ene
3. -yne

Q. Assertion (A) : Pb compounds are stable in +4 oxidation state.
Reason (R) : Pb exhibits inert pair effect.

1. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
2. Assertion is true but Reason is false
3. Assertion is false but Reason is true
4. Both Assertion and Reason are true and Reason is not the correct explanation of Assertion

Q.

$C{H}_3-C{H}_2-\underset{C{H}_3}{\underset{|}{C}}=CH-C{H}_2-\stackrel{C{H}_3}{\stackrel{|}{C}H}-C{H}_2-C{H}_3$

What is the IUPAC name of the following compound?

1. 3, 6-Dimethyl-3-octene

2. None of the above

3. 3, 6-Dimethyl-3-octene

4. 2-Ethyl-5-methyl-2-heptene

Q.

A hydrocarbon chain with molecular formula $C_7{H}_{16}$ is numbered in four different ways. Identify the correct numbering from the options given below.

1. 

2. 

3. 

4. 

Q. The IUPAC name of the compound CH3−CH2−CH=CH2 is

1. 1-Butene
2. 3-Butene
3. 2-Butene

Q. The IUPAC name of the compound CH3−CH3|CH−CH2−CH=CH−CH3 is .

1. 5-methylhex-3-ene
2. 2-methylhex-4-ene
3. 5-methylhex-2-ene

Q. The IUPAC name of the compound CH3−CH2−CH=CH−CH2−CH3 is .

1. hept-3-ene
2. hex-3-ene
3. pent-3-ene

Q. The IUPAC name of the compound CH3−CH2−CH=CH−CH2−CH3 is .

1. hept-3-ene
2. hex-3-ene
3. pent-3-ene

Q. The IUPAC name of the compound CH3−CH2−CH=CH2 is

1. but-1-ene
2. but-3-ene
3. but-2-ene

Q. is used as the primary suffix in the nomenclature of the compound $C{H}_2=CH-C{H}_2-C{H}_3$.

1. -ane
2. -ene
3. -yne