In the reaction, C6H5CH3OxidationNaOHBSoda lime

the product C is:

1. C6H5OH                              2. C6H6

3. C6H5COONa                        4. C6H5ONa

Concept Questions :-

Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions
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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

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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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

Concept Questions :-

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

(a) C2H2                                 (b) C6H6

(c) C2H6                                 (d) C2H4

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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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 

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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Which alkene on ozonolysis gives CH3CH2CHO and ?

(a) 

(b) CH3CH2CH=CHCH2CH3

(c) CH3CH2CH=CHCH3

(d) 

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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Hydroxylation of propyne in the presence of HgSO4/H2SO4 is initiated by the attack of:

1. carbene                                    2. free radical

3. electrophile                               4. nucleophile

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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Ozonolysis of buta-1,3-diene gives:

1. HCHO and glyoxal

2. CH3CHO and glyoxal

3. CO2 and glyoxal

4. HCHO + glyoxal + CH3CHO

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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A mixture of ethane, ethene and ethyne is passed through ammoniacal AgNO3 solution. The gases which remain unreacted are:

1. ethane and ethene                 2. ethane and ethyne

3. ethene and ethyne                 4. ethane only

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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Which is the most suitable reagent among the following to distinguish compound (III) from rest of the compounds?

I. CH3-CC-CH3

II. CH3-CH2-CH2-CH3

III. CH3-CH2-CCH

IV. CH3-CH=CH2

1. Br2/CCl4                                        2. Br2/CH3COOH

3. Alk.KMnO4                                     4. Ammoniacal AgNO3

Concept Questions :-

Alkanes, Alkenes and Alkynes - Chemical Properties
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