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 |
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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 |
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P, Q, and R in the above-mentioned sequence of reactions are respectively -

1. 
 
2. 
 
3. 
 
4. 

 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
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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 |
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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 |
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The correct order of acidity 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 |
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Predict the correct intermediate and product in the following reaction: 
H3C-CCHHgSO4H2O, H2SO4IntermediateAProductB
1. A: H3C-C|OH=CH2  ; B:  H3C-C|SO4=CH2
2. A: H3C-C||O-CH3  ; B:  H3C-CCH
3. A: H3C-C|OH=CH2  ; B:  H3C-C||O-CH3
4. A: H3C-C|SO4=CH2  ; B:  H3C-C||O-CH3
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
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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 |
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In the given reaction 
 
The product P is

1. 

2.  

3.  

4.  

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
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The compound that will react most readily with gaseous bromine has the formula-
1.  C3H6
2.  C2H2
3.  C4H10
4.  C2H4

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
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