General Methods of Preparation, Properties, and Reactions NEET Questions

Organic Chemistry - Hydrocarbons

General Methods of Preparation, Properties, and Reactions MCQ Questions


1.
Which of the following catalysts is NOT used for the hydrogenation of alkenes to alkanes?
A.
Finely divided palladium
B.
Finely divided platinum
C.
Anhydrous AlCl3
D.
Raney nickel
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ANSWER :
C. Anhydrous AlCl3
2.
Wurtz reaction is used for the preparation of:
A.
Aromatic hydrocarbons
B.
Symmetrical higher alkanes with even number of carbon atoms
C.
Lower alkanes only
D.
Unsymmetrical higher alkanes
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ANSWER :
B. Symmetrical higher alkanes with even number of carbon atoms
3.
In Wurtz reaction, when CH3Br and C2H5Br are taken together, the products formed are:
A.
Ethane, propane and n-butane
B.
Only ethane and propane
C.
Only propane
D.
Only n-butane
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ANSWER :
A. Ethane, propane and n-butane
4.
Decarboxylation of sodium ethanoate with soda lime gives:
A.
Ethane
B.
Ethene
C.
Methane
D.
Ethanol
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ANSWER :
C. Methane
5.
Sodium salt of which acid will produce propane on decarboxylation?
A.
Propanoic acid
B.
Butanoic acid
C.
Ethanoic acid
D.
Pentanoic acid
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ANSWER :
B. Butanoic acid
6.
Kolbe's electrolysis of an aqueous solution of sodium acetate produces at the anode:
A.
Ethane and CO2
B.
Ethyne and CO2
C.
Ethene and H2
D.
Methane and CO2
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ANSWER :
A. Ethane and CO2