Structural Isomerism (L-1) - JLD 3.0

Structural Isomerism 1
Telegram Channel
livedaily.me/jee
Unacademy
Subscription
LIVE Class Environment Performance Analysis

LIVE Polls & Leaderboard Weekly Test Series
LIVE Doubt Solving DPPs & Quizzes
LIVE Interaction
11th / 9, 10
12th / Drop
ATJEE
Structural Isomerism 1
Isomerism
The compounds which

are having same
CLASSIFICATION OF ISOMERISM
molecular formula but
differ in structures are
known as ISOMERS.
Structural isomerism Stereo isomerism
⮚ Chain isomerism
⮚ Position isomerism Conformational Configurationally
⮚ Functional isomerism
Geometrical
⮚ Metamerism Optical
⮚ Tautomeris Cis isomerism Trans isomerism

m
Isomerism
(a) Chain isomerism
Compounds having same molecular formula but differ in the nature of

carbon chain are known as chain isomers and the phenomenon is known
as chain isomerism.
Examples are
(i) C4H10; CH2CH2 CH2CH3 and CH3 − CH − CH3
−
n - Butane
CH3
Iso-butane
Chain Isomerism
(ii) C4H8O; CH3CH2 CH2CHO and CH3 − CH − CHO
−
Butanal
CH3
2- Methylpropanal
Position Isomerism
Compounds having same molecular formula but differ in the position of

substituents or multiple bond or functional groups are known as position
isomers and the phenomenon is known as position isomerism.
Examples are
(i) C4H8; CH3CH2 CH=CH2 , CH3 − CH = CH − CH3

1- Butene 2-butene
Position Isomerism
CHO
CHO CHO
CH3
CH3
2- Methyl benzaldehyde CH3
3- Methyl benzaldehyde
or 4- Methyl benzaldehyde
or
0- Tolualdehyde or
m- Tolualdehyde
p- Tolualdehyde
Functional Isomerism

functional groups are known as functional isomers and the phenomenon is
known as functional isomerism.
Examples are
C3H6O; Acyclic isomers:
O
(i) CH3CH2CHO (ii) CH3 − C − CH3
Propanal Propanon
e
Compounds having same molecular formula but different functional groups in them.
(iii) CH2 = CHCH2OH (iv) H2C = CH −O CH3

Prop-2-en-1-ol Methoxyethene
H OH
Cyclic isomers: O
(v) O (vi)
CH3 (vii)
Oxetane 2- methyl oxirane

Cyclopropanol
( 1,3- Epoxy propane) ( 1,2- Epoxy propane)
Metamerism

alkyl groups attached to the same functional group are known as metamers
and the phenomenon is known as metamerism.
Examples are
− −
C4H10O; CH3 CH2 O CH2CH3 − −
, CH3 O CH2CH2CH3
EthoxyEthane MethoxyEthane
Metamerism
O
O
C5H10O; CH3 CH2 − C−CH2CH3 and CH3 − C−CH2CH2CH3
Pentan-3-one Pentan-2-one
O O
=
Compounds having − O −, − S −, − C −, − NH −, − C − O − Functional
groups only exhibit metamerism.
Number of structural isomers possible of C4H10O are
A. 7
B. 6
C. 4
D. 5
Number of structural isomers possible for C4H8 are
A. 3
B. 4
C. 5
D. 6
Structural isomers possible for C4H8Br2 are
A. 6
B. 9
C. 10
D. 4
The type of isomerism due to different types of alkyl group on
either side of functional groups in the molecule of compounds
CH3CH2OCH2CH3 and CH3OC3H7 is referred as
A. Metamerism
B. Chain isomerism
C. Functional isomerism
D. Position isomerism
Total number of isomers with molecular formula of C7H8O
containing benzene is
A. 3
B. 4
C. 6
D. 5
Ring Chain Isomers
Compounds with C4H11N as molecular formula can exhibit
A. Position isomerism
B. Metamerism
C. Functional isomerism
D. All of these
How many cyclic and alkene isomers of C4H8 are possible?
(Excluding stereoisomers)
A. 3
B. 4
C. 5
D. 6
How many cyclic and alkene isomers of C4H8 are possible?
(Excluding stereoisomers)
A. 3
B. 4
C. 5
D. 6
The number of structural isomers for C6H14 is
A. 5
B. 6
C. 7
D. 4
HCOOCH2CH3 and CH3CH2COOH are related as
A. Functional isomers only
B. Functional and chain isomers
C. Metamers only
D. Chain isomers
How many total structural isomers are possible for alkyne with
molecular formula C6H10?
A. 1
B. 2
C. 7
D. 4
The number of ether metamers represented by molecular
formula C4H10O is
A. 1
B. 2
C. 3
D. 4
How many positions isomers are possible for dinitrotoluene?
A. 6
B. 7
C. 5
D. 4
How many ketones are possible with molecular formula
C6H12O?
A. 5
B. 6
C. 7
D. 8
How many positional isomers are possible for
methylcyclopentanamine?
A. 3
B. 5
C. 6
D. 8
How many structural isomers of C9H18 that have a six
membered ring and trisubstituted?
A. 3
B. 4
C. 5
D. 6
The number of trimethyl cyclohexane that is possible, is
A. 4
B. 5
C. 6
D. 7
How many structural products are formed when C 5H12 is
monochlorinated?
A. 5
B. 6
C. 7
D. 8
How many isomers containing benzene ring possible for
C7H8O?
A. 5
B. 6
C. 7
D. 8
How many dibromobenzenes are possible?
A. 1
B. 2
C. 3
D. 4
Ans. C
The number of all the possible isomers of chlorobutane is:
A. 2
B. 4
C. 6
D. 5
Ans. D
Relation between (A) and (B) is:
A. Chain isomers
B. Positional isomers
C. Functional isomers
D. metamers
Ans. C
Which of the following pairs of structures does not represent isomers?
A. B.
C. D.
Ans. D
How many distinct terminal alkynes are possible for a compound
having molecular formula C6H10?
A. 3
B. 4
C. 5
D. 6
Ans.
B
How many distinct terminal alkenes are possible for a compound having
A. 3
B. 4
C. 5
D. 6
Ans. D
How many distinct terminal alkynes are possible for a compound having
A. 1
B. 2
C. 3
D. 4
Ans.
B
How many distinct internal alkynes may exist with a molecular formula
of C6H10?
A. 1
B. 2
C. 3
D. 4
Ans. C
Daily | TIMETABLE
11th
Namo Sir | Physics Ashwani Sir | Chemistry Sameer Sir | Maths

6:00 - 7:30 PM 7:30 - 9:00 PM 9:00 - 10:30 PM
12th
Jayant Sir | Physics Anupam Sir | Chemistry Nishant Sir | Maths

1:30 - 3:00 PM 3:00 - 4:30 PM 4:30 - 6:00 PM
livedaily.me/jee
Unacademy
Subscription
LIVE Class Environment Performance Analysis

LIVE Polls & Leaderboard Weekly Test Series
LIVE Doubt Solving DPPs & Quizzes
LIVE Interaction
India’s BEST Educators Unacademy Subscription
If you want to be the BEST

“Learn” from the BEST
Step 1 Step 2
INSTALL
11th / 9, 10
12th / Drop
ATJEE
Thank You
#JEELiveDaily

Structural Isomerism (L-1) - JLD 3.0

Uploaded by

Copyright:

Available Formats

Structural Isomerism (L-1) - JLD 3.0

Uploaded by

Document Information

Original Description:

Original Title

Copyright

Available Formats

Share this document

Share or Embed Document

Sharing Options

Did you find this document useful?

Is this content inappropriate?

Copyright:

Available Formats

Structural Isomerism (L-1) - JLD 3.0

Uploaded by

Copyright:

Available Formats

Structural Isomerism 1

LIVE Class Environment Performance Analysis

The compounds which

⮚ Tautomeris Cis isomerism Trans isomerism

(a) Chain isomerism

Compounds having same molecular formula but differ in the nature of

(ii) C4H8O; CH3CH2 CH2CHO and CH3 − CH − CHO

Compounds having same molecular formula but differ in the position of

(i) C4H8; CH3CH2 CH=CH2 , CH3 − CH = CH − CH3

Compounds having same molecular formula but differ in the nature of

(iii) CH2 = CHCH2OH (iv) H2C = CH −O CH3

Oxetane 2- methyl oxirane

Compounds having same molecular formula but differ in the nature of

Namo Sir | Physics Ashwani Sir | Chemistry Sameer Sir | Maths

Jayant Sir | Physics Anupam Sir | Chemistry Nishant Sir | Maths

LIVE Class Environment Performance Analysis

If you want to be the BEST

You might also like