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Free download in PDF Hydrocarbon Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams IIT-JEE, NEET, AIIMS etc. These short solved questions or quizzes are provided by Gkseries.
(21)
How many isomeric alkanes of the molecular formula C5H12 are there?
[A]
1
[B]
2
[C]
3
[D]
None of the above
(22)
The reaction of ethyne with which of the following gives CH2Br-CHBrCl?
[A]
HCl, then HBr
[B]
HCl, then Br2
[C]
Cl2, then HBr
[D]
Cl2, then Br2
(23)
Dehydration of an alcohol leads to the formation of an _____ .
[A]
alkene
[B]
alkane
[C]
alkyne
[D]
None of the above
(24)
A reaction in which a carboxylic acid reacts with a base to form a salt and water is called _____ .
[A]
ionization
[B]
esterification
[C]
hydrolysis
[D]
neutralization
(25)
Which of the following alcohols forms a ketone when oxidized?
[A]
1-propanol
[B]
methanol
[C]
2-methyl-2-propanol
[D]
2-propanol
(26)
What is the sum of the coefficients in the balanced equation for the complete combustion of 2-methylbutane? Use smallest whole number coefficients. Do not forget coefficients of 1.
[A]
10
[B]
13
[C]
17
[D]
20
(27)
The organic starting materials for the preparation of an ester could be _______ .
[A]
an acid and an alcohol
[B]
a ketone and an alcohol
[C]
an alkane and a ketone
[D]
only an acid
Answer: an acid and an alcohol
(28)
Hydrolysis (saponification) of a fat would yield ______ .
[A]
water and an alkene
[B]
ethanol and propanoic acid
[C]
glycerol and soap
[D]
ethanol and a soap
Answer: glycerol and soap
(29)
Which of the following compounds is a functional group isomer of C2H5OH, ethanol (ethyl alcohol)?
[A]
ethanal, CH3CHO
[B]
acetic acid, CH3COOH
[C]
diethyl ether, (C2H5)2O
[D]
dimethyl ether, (CH3)2O
Answer: dimethyl ether, (CH3)2O
(30)
Which one of the following compounds is an isomer of CH3CH2CH2CH2OH?
[A]
CH3CH2CH2OH
[B]
CH3CH(OH)CH3
[C]
CH3CH2CH2CHO
[D]
none of the above
Answer: none of the above
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