Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?       

1. NaNH2

2. HCl

3. O2

4. Br2

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 70%
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A compound is treated with NaNH2 to give sodium salt. Identify the compound.                      

1. C2H2                  2. C6H6

3. C2H6                  4. C2H4

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 70%
From NCERT
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A compound that is formed on passing chlorine through propene at 400°C is -

1. PVC                       

 2. Allyl chloride  

3. Nickel chloride         

4. 1,2-Dichloro ethane

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 53%
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In the following reaction,


Product A is-

1. 

2. 

3. 

4. 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 74%
From NCERT
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The monochlorinated products (excluding stereo-isomers) obtained from the reaction is:

1. 4 

2. 5 

3. 6 

4. 7

 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
From NCERT
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When acetylene is passed through dil. H2SO4 in presence of HgSO4, the compound formed is

1. ether 

2. ketone

3. acetic acid

4. acetaldehyde

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 65%
From NCERT
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Acetylenic hydrogens are acidic because

1. sigma electron density of C-H bond in acetylene is nearer to carbon which has 50% s-character

2. acetylene has only one hydrogen on each carbon

3. acetylene contains least number of hydrogens among the possible hydrocarbons having two carbons

4. acetylene belong to the class of alkynes with molecular formula CnH2n-2

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 79%
From NCERT
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A compound is treated with NaNH2 to give sodium salt. Identify the compound.

1. C2H2 

2. C6H6

3. C2H6 

4. C2H4

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 87%
From NCERT
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Ethylene forms ethylene chlorohydrin by the action of:

1. dry chlorine gas

2. dry hydrogen chlorine gas

3. solution of chlorine gas in water

4. dilute hydrochloric acid 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 52%
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Which alkene on ozonolysis gives 
 \(CH_3CH_2CHO\) and  \(CH_3CCH_3\\ ~~~~~~~~||\\ ~~~~~~~~O\) 

1.

2. CH3CH2CH=CHCH2CH3

3. CH3CH2CH=CHCH3

4. 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 84%
From NCERT
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