1-butyne on reaction with hot alkaline KMnO4 gives:

1. CH3CH2CH2COOH 

2. CH3CH2COOH + CO2

3. CH3CH2COOH

4. CH3CH2COOH + HCOOH

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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CH3-CC-CH3NaNH2 X; what is X?

(a) CH3-CH2CH2CH3

(b) CH3CH2CCH

(c) 

(d) CH2=C=CH-CH3

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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Acetylene on reacting with hypochlorous acid gives:

1. CH3COCl                                   2. ClCH2CHO

3. Cl2CH.CHO                                4. ClCH2COOH

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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Benzene reacts with CH3Cl in the presence of anhy. AlCl3 to form

(a) toluene

(b) chlorobenzene

(c) benzylchloride

(d) xylene

 

Concept Questions :-

Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions
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CHCHO3/NaOHXZn/CH3COOHY. Y is:

1. CH2OH-CH2OH                         2. CH3CH2OH

3. CH3COOH                                 4. CH3OH

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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What is the end product of the following sequences of operations?

         CaC2H2OAHg2+Dil.H2SO4H2NiC

1. Methyl alcohol                              2. Acetaldehyde

3. C2H5OH                                      4. C2H4

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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Alkynes can be reduced to alkenes by hydrogenation in presence of:

(a) raney Ni                              (b) anhy. AlCl3

(c) Pd                                       (d) Lindlar's catalyst

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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R-CH=CH2C2H5OHNa/NH3(l)RCH2CH3 is called:

(a) Clemmensen reduction                   (b) Fisher-Spier reduction                   

(c) Birch reduction                              (d) Arndt-Eistert reduction                   

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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The cylindrical shape of an alkyne is due to 

(a) three sigma C-C bonds

(b) three π C-C bonds

(c) two sigma C-C and one π C-C bonds

(d) one sigma C-C and twoπ C-C bonds

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Octane no. of a fuel can be increased by:

(a) isomerism                               (b) alkylation

(c) reforming                                (d) all of these

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