Hydrocarbon (A) reacts with bromine by substitution reaction to form an alkyl bromide B.
B undergoes the Wurtz reaction to give a gaseous hydrocarbon containing less than four carbon atoms.

The formula of (A) is:

1. CHCH
2. CH2=CH2 
3. CH3-CH3
4. CH4

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 68%
From NCERT
NEET - 2018
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The compound C7H8 undergoes the following reactions

C7H83Cl2/hvABr2/FeBZn/HCl C

The product 'C' is-

1. m–Bromotoluene

2. o–Bromotoluene

3. 3–Bromo–2,4,6–trichlorotoluene

4. p–Bromotoluene

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
From NCERT
NEET - 2018
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P, Q, and R in the above-mentioned sequence of reactions are respectively:

1.
2.
3.
4.
Subtopic:  Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
 56%
From NCERT
NEET - 2018
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The molecule among the following that has the hybridization sp2sp2sp, and sp from left to right atoms is-

1. HCC-CH

2. CH2=CH-CCH

3. CH2=CH-CH=CH2 

4. CH2-CH=CH-CH3

Subtopic:  Alkanes, Alkenes and Alkynes - Conformations and Hybridisation |
 89%
From NCERT
NEET - 2018
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Predict the correct intermediate and product in the following reaction.

H3C-CCH HgSO4H2O, H2SO4 Intermediate Product

                                                    (A)                   (B)

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 71%
From NCERT
NEET - 2017
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The correct order of acidity among the following is:

1. \(CH \equiv CH > CH_3 - C \equiv CH \)
\( > CH_2 = CH_2 > CH_3 - CH_3\)
2. \(CH \equiv CH > CH_2 = CH_2 \)
\( > CH_3 - C \equiv CH > CH_3 - CH_3\)
3. \(CH_3 - CH_3 > CH_2 = CH_2 \)
\( > CH_3 - C \equiv CH > CH \equiv CH \)
4. \( CH_2 = CH_2 > CH_3 - CH_3 \)
\( > CH_3 - C \equiv CH > CH \equiv CH\)
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 78%
From NCERT
NEET - 2017
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Predict the correct intermediate and product in the following reaction: 



1. \(A :\) \(H_{3} C - \underset{OH}{\underset{\left|\right.}{C}} = CH_{2}\) \(\) \(;\) \(B :\) \(\) \(H_{3} C - \underset{HSO_{4}}{\underset{\left|\right.}{C}} = CH_{2}\)

2. \(A :\) \(H_{3} C - \underset{O}{\underset{\left|\right. \left|\right.}{C}} - CH_{3}\) \(\) \(;\) \(B :\) \(\) \(H_{3} C - C \equiv CH\)

3. \(A :\) \(H_{3} C - \overset{OH}{\overset{\left|\right.}{C}} = CH_{2}\) \(\) \(;\) \(B :\) \(\) \(H_{3} C - \overset{O}{\overset{\left|\right. \left|\right.}{C}} - CH_{3}\)


4. \(A :\) \(H_{3} C - \underset{HS O_{4}}{\underset{\left|\right.}{C}} = CH_{2}\) \(\) \(;\) \(B :\) \(\) \(H_{3} C - \underset{O}{\underset{\left|\right. \left|\right.}{C}} - CH_{3}\)
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 77%
From NCERT
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Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only elimination reaction?

1.
2.
3.
4.
Subtopic:  Aliphatic Hydrocarbon - Methods of Preparation |
 75%
From NCERT
NEET - 2016
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In the given reaction 
 
The product P is:

1. 2.
3. 4.
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
NEET - 2016
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The compound that will react most readily with gaseous bromine has the formula:

1. \(C_3H_6\) 2. \(C_2H_2\)
3. \(C_4H_{10}\) 4. \(C_2H_4\)
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
From NCERT
NEET - 2016
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