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DPP06 Dstructuralisomerism Emerge
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Course
ORGANIC CHEMISTRY-I
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Amity University
Academic year: 2023/2024
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Newtown, Kolkata-700 156
6
Marking Scheme : Single Correct (+3,-1) M M: 93 Time : 1 hr
1. Which of the following pairs of structures do not represent isomers?
(a)
O
and
O
(b)
OH
and
O
(c)
O
and
O
(d)
O
and
2. How many isomers of C 5 H 11 OH will be primary alcohols
(a) 2 (b) 3 (c) 4 (d) 5
3. Number of structural isomers possible from molecular formula C 4 H 9 Cl
(a) 3 (b) 4 (c) 5 (d) 6
4. In which of the following, functional group isomerism is possible?
(a) Alcohols (b) Aldehydes (c) Alkyl halides (d) Cyanides
5. Number of only cyclic structural isomers possible from molecular formula C 4 H 6 is
(a) 3 (b) 4 (c) 5 (d) 6
6. Total number of structural isomers possible from molecular formula C 4 H 10 O is.
(a) 4 (b) 5 (c) 6 (d) 7
7. In which of the following functional group isomerism not possible?
(a) carbooxylic acid (b) aldehyde (c) ether (d) alkylhalide
8. Total number of structural isomers possible from molecular formula C 8 H 18 that contain seven carbons in
the parent chain are?
(a) 3 (b) 4 (c) 5 (d) 6
9. Which of the following is correctiy matched?
(a) and : Chain Isomer (b) and : Positional Isomer
(c)
Cl
Br
and
Br
Cl
: Identical (d)
OCH 3
and
CH 2 OH
: Metamer
10. Tolal number of structural isomers possible from molecular formula C 7 H 16 that contain five carbons in
the parent chains are?
(a) 3 (b) 4 (c) 5 (d) 6
EMERGE 2024
ISOMERISM
STRUCTURAL ISOMERISM 06D
Newtown, Kolkata-700 156
7
11. Among the following. which is not structural isomers of the others?
(a) (b) (c) (d)
12. Which of the following pairs of compoundsis not a pair of constitutional isomers?
(a) CH 3 O CH CH 2 and CH 3 CH CH 2
O
(b) and CH 3 CH CHCH 2 CH 3
(c) CH C 3 OH
O
and HO CH CH 2
O
(d)
CH 3
CH 3 CHCH(CH 3 2) and (CH 3 ) 2 CHCH(CH 3 ) 2
13. Name the compound, that is not isomer with diethyl ether
(a) n-propylmethyl ether (b) Butane-1-ol (c) 2-methylpropane-2-ol (d) Butanone
14. C 7 H 9 N has how many isomeric forms that contain a benzene ring?
(a) 4 (b) 5 (c) 6 (d) 7
15. Which of the following compounds will show metamerism:
(a) CH 3 COOC 2 H 5 (b) C 2 H 5 S C 2 H 5 (c) CH 3 O CH 3 (d) CH 3 O C 2 H 5
16. Only two isomers of monochloro product is possible of
(a) n-butane (b) 2,4-dimethyl pentane (c) Benzene (d) 1-methyl propane
17. Number of isomers of molecular formula C 2 H 2 Br 2 are
(a) 1 (b) 2 (c) 3 (d) 0
18. How many alcohols are structural isomers with the formula:C 5 H 11 OH?
(a) 5 (b) 6 (c) 7 (d) 8
19. The number of isomers from the molecular formula C 7 H 8 O having phenyl ring is:
(a) 2 (b) 3 (c) 4 (d) 5
20. How many isomers are possible for C 3 H 7 Br?
(a) 1 (b) 2 (c) 3 (d) 4
21. The number of possible alkynes with molecular formula C 5 H 8 is
(a) 2 (b) 3 (c) 4 (d) 5
22. Total number of alcohols possible (structurally different) for molecular formula C 4 H 10 O are:
(a) 3 (b) 4 (c) 5 (d) 6
23. Which of the following pairs of molecules are NOT structural isomers?
(a)
CH 3
H C 3
,
CH 3
CH 3
H C 3
(b)
O
H C 3 CH 3
,
OH
(c)
CH 3
, H 3 C C C CH 3 (d)
O
OCH 3
H C 3 ,
OH
HO
Newtown, Kolkata-700 156
20
All students are advised to solve DPPs within allowed time only.
All discussions are scheduled in every 4th doubt discussion class
–MKA Sir (Guruji)
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DPP06 Dstructuralisomerism Emerge
Course: ORGANIC CHEMISTRY-I
38 Documents
Students shared 38 documents in this course
University: Amity University
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Newtown, Kolkata-700 156
: iitianexplains.kol@gmail.com
6
Marking Scheme : Single Correct (+3,-1) M M: 93 Time : 1 hr
1. Which of the following pairs of structures do not represent isomers ?
(a)
O
and
O
(b)
OH
and
O
(c)
O
and
O
(d)
O
and
2. How many isomers of C5H11OH will be primary alcohols
(a) 2 (b) 3 (c) 4 (d) 5
3. Number of structural isomers possible from molecular formula C4H9Cl
(a) 3 (b) 4 (c) 5 (d) 6
4. In which of the following, functional group isomerism is possible ?
(a) Alcohols (b) Aldehydes (c) Alkyl halides (d) Cyanides
5. Number of only cyclic structural isomers possible from molecular formula C4H6 is
(a) 3 (b) 4 (c) 5 (d) 6
6. Total number of structural isomers possible from molecular formula C4H10O is.
(a) 4 (b) 5 (c) 6 (d) 7
7. In which of the following functional group isomerism not possible ?
(a) carbooxylic acid (b) aldehyde (c) ether (d) alkylhalide
8. Total number of structural isomers possible from molecular formula C8H18 that contain seven carbons in
the parent chain are?
(a) 3 (b) 4 (c) 5 (d) 6
9. Which of the following is correctiy matched?
(a) and : Chain Isomer (b) and : Positional Isomer
(c)
Cl
Br
and
Br
Cl
: Identical (d)
OCH
3
and
CH
2
OH
: Metamer
10. Tolal number of structural isomers possible from molecular formula C7H16 that contain five carbons in
the parent chains are ?
(a) 3 (b) 4 (c) 5 (d) 6
EMERGE 2024
ISOMERISM
STRUCTURAL ISOMERISM 06D
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