Exams › NEET › Chemistry

Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms. (A) is

1. CH≡CH
2. CH2=CH2
3. CH4
4. CH3−CH3

Correct answer: CH4

Solution

The hydrocarbon (A) must be methane (CH4) because it undergoes substitution with bromine to form CH3Br. In the Wurtz reaction, CH3Br reacts with sodium to form ethane (C2H6), which is a gaseous hydrocarbon with less than four carbon atoms.

Related NEET Chemistry questions

• Which type of isomerism is shown by But-2-yne and cyclobutene?
• Method used to separate Petrol from crude oil is:
• A mixture of oxygen and ethyne is burnt for welding. Why a mixture of ethyne and air is not used?
• What is called black gold?
• In the hydrocarbon CH3—CH=CH—CH2—C≡CH, the state of hybridization of carbons 1, 3 and 5 are in the following sequence:
• The alkane that gives only one mono-chloro product on chlorination with Cl2 in presence of diffused sunlight is

⚔️ Practice NEET Chemistry free + battle 1v1 →