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 |
 69%
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Mark the compound that, when treated with NaNH₂, forms its sodium salt:

1. C2H2  2. C6H6
3. C2H6  4. C2H4

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 68%
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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 |
 73%
From NCERT
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How many monochlorinated products (excluding stereoisomers) are obtained from the given reaction?
   
1. 4
2. 5
3. 6
4. 7
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
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The compound formed when acetylene is passed through dilute sulphuric acid in the presence of mercury(II) sulphate is:

1. Ether

2. Ketone

3. Acetic acid

4. Acetaldehyde

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 65%
From NCERT
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Why are acetylenic hydrogens acidic?

1. The sigma electron density of the C-H bond in acetylene is closer to carbon, which has 50% s-character.
2. Acetylene has only one hydrogen on each carbon.
3. Acetylene contains the least number of hydrogens among the possible hydrocarbons having two carbons.
4. Acetylene belongs to the class of alkynes with the molecular formula \(\mathrm{C}_{\mathrm{n}} \mathrm{H}_{2 \mathrm{n}-2}\).
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 79%
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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.  \(\mathrm {CH_3CH_2CH=CHCH_2CH_3}\)
3. \(\mathrm {CH_3CH_2CH=CHCH_3}\)
4.  

1. 

2. CH3CH2CH=CHCH2CH3

3. CH3CH2CH=CHCH3

4.    
 

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