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 Page 1


LEARNERS HABITAT
1] (CH
3
)
3
 CMgCl on reaction with D
2
O produces:
a) (CH
3
)
3
CD b) (CH
3
)
3
 COD c) (CD
3
)
3
 CD d) (CD
3
)
3
 COD
2] Which has maximum b.p. and m.p. out of :
 I  II  III 
a) I in both case b) I, II c) I, III d) II, I
3] C
5
H
11
Cl by Wurtz reaction forms 2, 2, 5, 5-tetramethyl hexane as the main product.
Hence, C
5
 H
11
 Cl is:
a) 2, 2-dimethyl-1-chloropropane b) 2-methyl-l-chlorobutane
c) both are true d) none is true
4]  A, A is: 
a) b) c) d) CH
3
COCH
3 
5] CH
3
CH
2 
Cl + LiAlH
4
 ? ? ? CH
3
CH
3
. This reduction process follows:
a) S
N 
1 mechanism  b) S
N
 2 mechanism  c) E1 mechanism  d) E2 mechanism
6] The complete combustion of CH
4
 gives:
a) CO + H
2
b) CO + N
2
c) CO
2 
+ H
2
O d) CO + N
2
O
7] Which of the following gives methane [CH
4
] on hydrolysis?
a) Fe
3
O
4
b) Al
2
 O
3
c) CaC
2
d)Al
4
C
3
8] The organic reaction product from the reaction of methyl magnesium bromide and
ethyl alcohol is
a) methane b) ethane c) propane d) butane
9] Propane is obtained from propene, by which of the following method?
a) Wurtz reaction b) Dehydration
c) Frankland reaction d) Catalytic hydrogenation
10] The product formed by heating sodium propionate with sodalime is:
a) acetone b) propyl amine
c) ethane d) acetaldehyde
CH CH
3
CH
3
CH
3
KMnO
4
CH
3
CH CHCOOH
3
CH
3
CH C=CH
3 2
OH
CH
3
CH C
3   
CH
3
HYDROCARBONS
Page 1
Page 2


LEARNERS HABITAT
1] (CH
3
)
3
 CMgCl on reaction with D
2
O produces:
a) (CH
3
)
3
CD b) (CH
3
)
3
 COD c) (CD
3
)
3
 CD d) (CD
3
)
3
 COD
2] Which has maximum b.p. and m.p. out of :
 I  II  III 
a) I in both case b) I, II c) I, III d) II, I
3] C
5
H
11
Cl by Wurtz reaction forms 2, 2, 5, 5-tetramethyl hexane as the main product.
Hence, C
5
 H
11
 Cl is:
a) 2, 2-dimethyl-1-chloropropane b) 2-methyl-l-chlorobutane
c) both are true d) none is true
4]  A, A is: 
a) b) c) d) CH
3
COCH
3 
5] CH
3
CH
2 
Cl + LiAlH
4
 ? ? ? CH
3
CH
3
. This reduction process follows:
a) S
N 
1 mechanism  b) S
N
 2 mechanism  c) E1 mechanism  d) E2 mechanism
6] The complete combustion of CH
4
 gives:
a) CO + H
2
b) CO + N
2
c) CO
2 
+ H
2
O d) CO + N
2
O
7] Which of the following gives methane [CH
4
] on hydrolysis?
a) Fe
3
O
4
b) Al
2
 O
3
c) CaC
2
d)Al
4
C
3
8] The organic reaction product from the reaction of methyl magnesium bromide and
ethyl alcohol is
a) methane b) ethane c) propane d) butane
9] Propane is obtained from propene, by which of the following method?
a) Wurtz reaction b) Dehydration
c) Frankland reaction d) Catalytic hydrogenation
10] The product formed by heating sodium propionate with sodalime is:
a) acetone b) propyl amine
c) ethane d) acetaldehyde
CH CH
3
CH
3
CH
3
KMnO
4
CH
3
CH CHCOOH
3
CH
3
CH C=CH
3 2
OH
CH
3
CH C
3   
CH
3
HYDROCARBONS
Page 1
11] Which is antiknock agent?
a) (C
3
H
7
)
4
 Pb b) (C
2
H
5
)
4
 Pb
c) (CH
3
)
4
 Pb d) none of these
12] By oxidation ozonolysis A (C
4
H
8
) changes to CH
3
COOH. Thus A is:
a)   b)
c) CH
3
CH = CHCH
3
d) CH
3
CH
2
CH=CH
2
13] CH
3
CH = CH
2
4
2 2
NaBD
H O /OH
? ? ? ? Product X; X is: 
a) b) c) d) none is correct 
14] B 
2
Lindlar/H
? ? ? ? ? R
 __
C = C
__
R 
3
Na/ NH
? ? ? ? ? A, A and B are geometrical isomers 
(R
__
CH = CH
 __
R):
a) A is cis, B is trams b) A is trans, B is cis
c) A and B both are cis d) A and B both are trans
15]
4 4
NaIO /KMnO
? ? ? ? ? ? Products; products are: 
a) b) 
c) d) none is correct 
16] Which one of the following has the smallest heat of hydrogenation per mol?
a) 1-butene b) trans-2-butene  c) cis-2-butene d) 1, 3-butadiene
17] CH
3
CH = CHCH
3
 + CH
2
N
2
 ? A ; A is:
a)  b) c) both are correct  d) none is correct
18] Alkene(A) + 
4
KMnO
?
? ? ? ? + 
A is: 
a) b) c) d) 
19] 
       I           II III 
Which one is most easily dehydrohalogenated? 
a) I b) II c) III d) All with same ease
CH
3
CHCH D
2
OH
CH
3
CHCH OH
2
D
CH
3
CHCH
3
OD
C=CHCCH
3
CH
3
CH
3
CH
3
CH
3
CCH ,(CH ) CCOOH
3 3 3
O
CH
3
CCH ,(CH ) CCHO
3 3 3
O
CH
3
COH,(CH ) CCOOH
3 3
CH
3
O
CH   CHCH 
3
N
2
CH
3
CH
3
CH   CHCH 
3
CH
3
CH
2
O
Cl Cl Cl
HYDROCARBONS
 
Page 2
Page 3


LEARNERS HABITAT
1] (CH
3
)
3
 CMgCl on reaction with D
2
O produces:
a) (CH
3
)
3
CD b) (CH
3
)
3
 COD c) (CD
3
)
3
 CD d) (CD
3
)
3
 COD
2] Which has maximum b.p. and m.p. out of :
 I  II  III 
a) I in both case b) I, II c) I, III d) II, I
3] C
5
H
11
Cl by Wurtz reaction forms 2, 2, 5, 5-tetramethyl hexane as the main product.
Hence, C
5
 H
11
 Cl is:
a) 2, 2-dimethyl-1-chloropropane b) 2-methyl-l-chlorobutane
c) both are true d) none is true
4]  A, A is: 
a) b) c) d) CH
3
COCH
3 
5] CH
3
CH
2 
Cl + LiAlH
4
 ? ? ? CH
3
CH
3
. This reduction process follows:
a) S
N 
1 mechanism  b) S
N
 2 mechanism  c) E1 mechanism  d) E2 mechanism
6] The complete combustion of CH
4
 gives:
a) CO + H
2
b) CO + N
2
c) CO
2 
+ H
2
O d) CO + N
2
O
7] Which of the following gives methane [CH
4
] on hydrolysis?
a) Fe
3
O
4
b) Al
2
 O
3
c) CaC
2
d)Al
4
C
3
8] The organic reaction product from the reaction of methyl magnesium bromide and
ethyl alcohol is
a) methane b) ethane c) propane d) butane
9] Propane is obtained from propene, by which of the following method?
a) Wurtz reaction b) Dehydration
c) Frankland reaction d) Catalytic hydrogenation
10] The product formed by heating sodium propionate with sodalime is:
a) acetone b) propyl amine
c) ethane d) acetaldehyde
CH CH
3
CH
3
CH
3
KMnO
4
CH
3
CH CHCOOH
3
CH
3
CH C=CH
3 2
OH
CH
3
CH C
3   
CH
3
HYDROCARBONS
Page 1
11] Which is antiknock agent?
a) (C
3
H
7
)
4
 Pb b) (C
2
H
5
)
4
 Pb
c) (CH
3
)
4
 Pb d) none of these
12] By oxidation ozonolysis A (C
4
H
8
) changes to CH
3
COOH. Thus A is:
a)   b)
c) CH
3
CH = CHCH
3
d) CH
3
CH
2
CH=CH
2
13] CH
3
CH = CH
2
4
2 2
NaBD
H O /OH
? ? ? ? Product X; X is: 
a) b) c) d) none is correct 
14] B 
2
Lindlar/H
? ? ? ? ? R
 __
C = C
__
R 
3
Na/ NH
? ? ? ? ? A, A and B are geometrical isomers 
(R
__
CH = CH
 __
R):
a) A is cis, B is trams b) A is trans, B is cis
c) A and B both are cis d) A and B both are trans
15]
4 4
NaIO /KMnO
? ? ? ? ? ? Products; products are: 
a) b) 
c) d) none is correct 
16] Which one of the following has the smallest heat of hydrogenation per mol?
a) 1-butene b) trans-2-butene  c) cis-2-butene d) 1, 3-butadiene
17] CH
3
CH = CHCH
3
 + CH
2
N
2
 ? A ; A is:
a)  b) c) both are correct  d) none is correct
18] Alkene(A) + 
4
KMnO
?
? ? ? ? + 
A is: 
a) b) c) d) 
19] 
       I           II III 
Which one is most easily dehydrohalogenated? 
a) I b) II c) III d) All with same ease
CH
3
CHCH D
2
OH
CH
3
CHCH OH
2
D
CH
3
CHCH
3
OD
C=CHCCH
3
CH
3
CH
3
CH
3
CH
3
CCH ,(CH ) CCOOH
3 3 3
O
CH
3
CCH ,(CH ) CCHO
3 3 3
O
CH
3
COH,(CH ) CCOOH
3 3
CH
3
O
CH   CHCH 
3
N
2
CH
3
CH
3
CH   CHCH 
3
CH
3
CH
2
O
Cl Cl Cl
HYDROCARBONS
 
Page 2
20] 
2
H O/H
?
? ? ? ? ? A (predominant), A is: 
a) b) 
c) d) 
21] The alkene R
__
CH=CH
2
 reacts readily with B
2
H
6
 and the product on oxidation with
alkaline hydrogen peroxide produces:
a) R
__
CH
2
___
CHO b) R
__
CH
2
__
CH
2
__
OH
c) d) 
22] In a reaction CH
2
 = CH
2
hypochlorous
acid
? ? ? ? ? ? M 
R
? ? ? M and R are: 
a) CH
3
CH
2
Cl and NaOH b) CH
2
Cl.CH
2
OH and (aq).NaHCO
3
c) CH
3
CH
2
OH and HCl d) and heat
23] Among the following alkenes?
1-butene  cis-2-butene trans-2-butene 
   I         II  III 
the decreasing order of stability is: 
a) II > I > III b) III > II > I c) III > I > II d) I > II > III
24] The compound on reaction with NaIO
4
 in the presence of KMnO
4 
gives: 
a) CH
3
COCH
3
+ CH
3
CHO b) CH
3
CHO + CO
2
c) CH
3
COCH
3
d) CH
3
COCH
3 
+ CH
3
COOH
25] Reaction of HBr with propene in presence of peroxide gives:
a) isopropyl bromide b) 3-bromo propane
c) allyl bromide d) n-propyl bromide
CH=CH CH
3
CH
3
OH
CH
2
CH    CH
3
OH
CH CH
2
CH
3
OH
CH CH    
CH
3
CH CH    HO
R     C O
CH
3
R     CH
OH
CH
2
OH
CH OH
2
CH OH
2
CH
2
CH
2
O
C CH
3
CH
3
CH CH
3
26] Ethylene  reacts with 1% alkaline solution of KMnO
4
 to produce:
a) ethylene glycol
c) acetone
b) formaldehyde
d) acetic acid
HYDROCARBONS
 
Page 3
Page 4


LEARNERS HABITAT
1] (CH
3
)
3
 CMgCl on reaction with D
2
O produces:
a) (CH
3
)
3
CD b) (CH
3
)
3
 COD c) (CD
3
)
3
 CD d) (CD
3
)
3
 COD
2] Which has maximum b.p. and m.p. out of :
 I  II  III 
a) I in both case b) I, II c) I, III d) II, I
3] C
5
H
11
Cl by Wurtz reaction forms 2, 2, 5, 5-tetramethyl hexane as the main product.
Hence, C
5
 H
11
 Cl is:
a) 2, 2-dimethyl-1-chloropropane b) 2-methyl-l-chlorobutane
c) both are true d) none is true
4]  A, A is: 
a) b) c) d) CH
3
COCH
3 
5] CH
3
CH
2 
Cl + LiAlH
4
 ? ? ? CH
3
CH
3
. This reduction process follows:
a) S
N 
1 mechanism  b) S
N
 2 mechanism  c) E1 mechanism  d) E2 mechanism
6] The complete combustion of CH
4
 gives:
a) CO + H
2
b) CO + N
2
c) CO
2 
+ H
2
O d) CO + N
2
O
7] Which of the following gives methane [CH
4
] on hydrolysis?
a) Fe
3
O
4
b) Al
2
 O
3
c) CaC
2
d)Al
4
C
3
8] The organic reaction product from the reaction of methyl magnesium bromide and
ethyl alcohol is
a) methane b) ethane c) propane d) butane
9] Propane is obtained from propene, by which of the following method?
a) Wurtz reaction b) Dehydration
c) Frankland reaction d) Catalytic hydrogenation
10] The product formed by heating sodium propionate with sodalime is:
a) acetone b) propyl amine
c) ethane d) acetaldehyde
CH CH
3
CH
3
CH
3
KMnO
4
CH
3
CH CHCOOH
3
CH
3
CH C=CH
3 2
OH
CH
3
CH C
3   
CH
3
HYDROCARBONS
Page 1
11] Which is antiknock agent?
a) (C
3
H
7
)
4
 Pb b) (C
2
H
5
)
4
 Pb
c) (CH
3
)
4
 Pb d) none of these
12] By oxidation ozonolysis A (C
4
H
8
) changes to CH
3
COOH. Thus A is:
a)   b)
c) CH
3
CH = CHCH
3
d) CH
3
CH
2
CH=CH
2
13] CH
3
CH = CH
2
4
2 2
NaBD
H O /OH
? ? ? ? Product X; X is: 
a) b) c) d) none is correct 
14] B 
2
Lindlar/H
? ? ? ? ? R
 __
C = C
__
R 
3
Na/ NH
? ? ? ? ? A, A and B are geometrical isomers 
(R
__
CH = CH
 __
R):
a) A is cis, B is trams b) A is trans, B is cis
c) A and B both are cis d) A and B both are trans
15]
4 4
NaIO /KMnO
? ? ? ? ? ? Products; products are: 
a) b) 
c) d) none is correct 
16] Which one of the following has the smallest heat of hydrogenation per mol?
a) 1-butene b) trans-2-butene  c) cis-2-butene d) 1, 3-butadiene
17] CH
3
CH = CHCH
3
 + CH
2
N
2
 ? A ; A is:
a)  b) c) both are correct  d) none is correct
18] Alkene(A) + 
4
KMnO
?
? ? ? ? + 
A is: 
a) b) c) d) 
19] 
       I           II III 
Which one is most easily dehydrohalogenated? 
a) I b) II c) III d) All with same ease
CH
3
CHCH D
2
OH
CH
3
CHCH OH
2
D
CH
3
CHCH
3
OD
C=CHCCH
3
CH
3
CH
3
CH
3
CH
3
CCH ,(CH ) CCOOH
3 3 3
O
CH
3
CCH ,(CH ) CCHO
3 3 3
O
CH
3
COH,(CH ) CCOOH
3 3
CH
3
O
CH   CHCH 
3
N
2
CH
3
CH
3
CH   CHCH 
3
CH
3
CH
2
O
Cl Cl Cl
HYDROCARBONS
 
Page 2
20] 
2
H O/H
?
? ? ? ? ? A (predominant), A is: 
a) b) 
c) d) 
21] The alkene R
__
CH=CH
2
 reacts readily with B
2
H
6
 and the product on oxidation with
alkaline hydrogen peroxide produces:
a) R
__
CH
2
___
CHO b) R
__
CH
2
__
CH
2
__
OH
c) d) 
22] In a reaction CH
2
 = CH
2
hypochlorous
acid
? ? ? ? ? ? M 
R
? ? ? M and R are: 
a) CH
3
CH
2
Cl and NaOH b) CH
2
Cl.CH
2
OH and (aq).NaHCO
3
c) CH
3
CH
2
OH and HCl d) and heat
23] Among the following alkenes?
1-butene  cis-2-butene trans-2-butene 
   I         II  III 
the decreasing order of stability is: 
a) II > I > III b) III > II > I c) III > I > II d) I > II > III
24] The compound on reaction with NaIO
4
 in the presence of KMnO
4 
gives: 
a) CH
3
COCH
3
+ CH
3
CHO b) CH
3
CHO + CO
2
c) CH
3
COCH
3
d) CH
3
COCH
3 
+ CH
3
COOH
25] Reaction of HBr with propene in presence of peroxide gives:
a) isopropyl bromide b) 3-bromo propane
c) allyl bromide d) n-propyl bromide
CH=CH CH
3
CH
3
OH
CH
2
CH    CH
3
OH
CH CH
2
CH
3
OH
CH CH    
CH
3
CH CH    HO
R     C O
CH
3
R     CH
OH
CH
2
OH
CH OH
2
CH OH
2
CH
2
CH
2
O
C CH
3
CH
3
CH CH
3
26] Ethylene  reacts with 1% alkaline solution of KMnO
4
 to produce:
a) ethylene glycol
c) acetone
b) formaldehyde
d) acetic acid
HYDROCARBONS
 
Page 3
27] In 1, 3-butadiene, the carbon atom is hybridised as:
a) sp b) sp
2
c) sp
3
d) sp
2
 and sp
3
28] An alkene ozonolysis yields two molecules of propanedial. It is:
a) b) 
c) CH
3
CH = CHCH
2
CH = CHCH
3
d) CH
3
CH
2
CH=CHC
2
H
5
29] A mixture of C
2
H
6
, C
2
H
4
 and C
2
H
2
 is passed through ammoniacal AgNO
3
. The gases
which remain unreacted are:
a) C
2
H
2
b) C
2
H
2
 and C
2
H
4
c) C
2
H
6
d) C
2
H
4
 and C
2
H
6
30] The empirical formula of a compound is CH
2
. 1 mole of this compound has a mass of
42g. Its molecular formula is:
a) C
2
H
2
b) CH
2
c) C
3
H
8
d) C
3
H
6
31] Alkaline KMnO
4
 oxidise acetylene to:
a) acetic acid b) ethyl alcohol c) ethylene glycol  d) oxalic acid
32] Iodoform (CHI
3
) reacts with Ag powder to produce:
a) methane b) ethane c) butane d) ethyne
33] Order of reactivity of C
2
H
6
, C
2
H
4
 and C
2
H
2 
is:
a) C
2
H
6
 < C
2
H
4
 < C
2
H
2
b) C
2
H
2
 > C
2
H
6 
> C
2
H
4
c) C
2
H
4
 > C
2
H
2
 > C
2
H
6
d) All are equally reactive
34] Identify (Y) in the series:
CH = CH 
3
O / NaOH
? ? ? ? ? (X) 
3
Zn/CH COOH
? ? ? ? ? ? (Y) 
a) CH
3
OH b) CH
2
COOH
__
CH
2
COOH
c) CH
3
CH
2
COOH d) CH
2
OH
__
CH
2
OH
35] What is the product when 1-butyne reacts with excess of HBr?
a) 2-2-dibromobutane b) 2-bromobutane
c) 1, 1, 2, 2-tetrabromobutane d) 1, 2-dibromobutene
HYDROCARBONS
 
Page 4
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FAQs on Question Bank: Hydrocarbons - Chemistry Class 11 - NEET

1. What are hydrocarbons?
Ans. Hydrocarbons are organic compounds that consist solely of hydrogen and carbon atoms. They are the primary components of fossil fuels like coal, natural gas, and petroleum. Hydrocarbons can exist in various forms, including alkanes, alkenes, alkynes, and aromatic compounds.
2. How are hydrocarbons used in everyday life?
Ans. Hydrocarbons have numerous applications in our daily lives. They are used as fuels for transportation, heating, and cooking. Hydrocarbons also serve as raw materials for the production of plastics, synthetic fibers, solvents, and lubricants. Additionally, they are utilized in the manufacturing of pharmaceuticals, cosmetics, and various chemical products.
3. Are hydrocarbons harmful to the environment?
Ans. Some hydrocarbons, particularly those derived from fossil fuels, can have negative environmental impacts. When burned, they release greenhouse gases such as carbon dioxide, contributing to climate change. Hydrocarbon spills, such as oil spills, can contaminate ecosystems and harm wildlife. However, the environmental impact of hydrocarbons depends on their usage and proper management.
4. How are hydrocarbons classified?
Ans. Hydrocarbons are classified based on their structure and the type of bonds between carbon atoms. Alkanes are hydrocarbons with single bonds between carbon atoms, alkenes have double bonds, and alkynes have triple bonds. Aromatic hydrocarbons contain a specific ring structure called a benzene ring. The classification helps in understanding their properties and reactivity.
5. Can hydrocarbons be converted into renewable energy sources?
Ans. While hydrocarbons derived from fossil fuels are non-renewable, efforts are being made to convert them into renewable energy sources. Technologies such as biofuel production and carbon capture and storage aim to reduce the carbon footprint associated with hydrocarbon usage. Additionally, research is ongoing to develop sustainable alternatives to fossil fuel-based hydrocarbons, such as hydrogen fuel cells and advanced biofuels.
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