The product(s) obtained via oxymercuration (HgSO4 + H2SO4 ) of but-1-yne is -

1. CH3CH2-C||O-CH3

2. CH3CH2 CH2-CHO

3. CH3CH2CHO + HCHO

4. CH3 CH2COOH + HCOOH

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 69%
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Ethene and ethyne can be distinguished by:

1. Br2 water

2. KMnO4 solution

3. Cuprous chloride solution

4. All of the above

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 58%
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Which among of the following alkyne will give an aldehyde on hydroboration oxidation reaction?

1. CHCH

2. CH3-CH2-CC-H

3. CH3-CC-H

4. All of these

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 77%
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Reductive ozonolysis of the alkene, CH3-CH=C=CH2 will give:

1. Only CO2

2. Only CH2O

3. Only CH3-CHO

4. Mixture of CH3CHO,HCHO and CO2

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 92%
From NCERT
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The reaction intermediate involved in the addition of \(\mathrm{HBr}\) to propene in the absence of peroxides is:

1. \(H^+\) 2. \(Br^-\)
3. \(H \) 4. \(Br\)
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 60%
From NCERT
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Toluene refluxed with Brin the presence of light generates mainly:

1. p-Bromotoluene.

2. Benzyl bromide.

3. o-Bromotoluene.

4. Mixture of o- and p-bromotoluene.

Subtopic:  Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
 62%
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Propyne and propene can be distinguished by ,

(1) conc. H2SO4

(2) Br2 in CCl4

(3) diluted H2SO4

(4) AgNO3 in ammonia

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 80%
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An alkene among the following that reacts fastest with H2 under catalytic conditions is -

1. 2.
3. 4.
Subtopic:  Alkanes, Alkenes and Alkynes - Conformations and Hybridisation |
 63%
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The product formed on reaction of HBr with propene is-

1. 1-bromopropane

2. 2-bromopropane

3. 3-bromopropane

4. no reaction occurs

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 89%
From NCERT
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The reaction of HBr with 

 in the presence of peroxide will give:

1.
2.
3.
4.
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 81%
From NCERT
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