Silver acetylide when heated with HCl gives:

1. C2H2

2. H2

3. C2H4 

4. C6H6

Subtopic:  Aliphatic Hydrocarbon - Methods of Preparation |
 75%
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R-CH2-CCl2-RReagentR-CC-R.
The reagent is: 

1. Na                                     
2. HCl in H2O
3. NaNH2               
4. Zn in alcohol 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 71%
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Which of these will not react with acetylene?

1. NaOH                                       
2. Amm. AgNO3
3. Na                                           
4. HCl

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
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Alkene-1 on hydroboration followed with action of H2O2 gives:

1. alkanol-2 

2. alkanol-1

3. alkanal 

4. alkanone

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 76%
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The reaction,

H2SO4 is the example of:

1. sulphonation 

2. dehydration

3. alkylation

4. decomposition

 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 91%
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2-bromopentane is heated with potassium ethoxide in ethanol. The major product obtained is  

1. 2-ethoxypentane               
2. pent-1-ene
3. trans-pent-2-ene               
4. cis-pent-2-ene

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 53%
From NCERT
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RCOCl and AlCl3 are used in the Friedel-Crafts reaction.
The electrophile among the following is:

1. Cl+                                       

2. RCOCl

3. RC+O                                     

4. R+

Subtopic:  Aromatic Hydrocarbons - Reactions & Mechanism |
 70%
From NCERT
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In the following reaction the catalyst used is:

         C6H6 + 3H2

1. Cr2O3                                      2. Al2O3

3. Zn dust                                    4. Cr2O3 and Al2O3

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 65%
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Gammexane (a γ-isomer) is:

1. BHC
2. Benzene hexachloride
3. Lindane
4. All of the above

Subtopic:  Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
 74%
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An alkene, obtained by the dehydration of an alcohol (A), on ozonolysis gives two molecules of acetaldehyde for every molecule of alkene. The alcohol (A) is:

1. CH3CH2CH2OH 

2. CH3CH2OH

3. CH3CH=CHCH2OH   

4. 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 65%
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