12th Grade > Chemistry
ISOMERISM MCQs
Total Questions : 30
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Answer: Option A. -> Isomers
:
A
Compounds with same molecular formula but different structural formula are called isomers. This is the definition of isomers.
:
A
Compounds with same molecular formula but different structural formula are called isomers. This is the definition of isomers.
Answer: Option C. -> Metamerism
:
C
Metamerism is shown only by secondary amines, ethers and ketones.
Themetamerismarises when different alkyl groups are attached to same functional group.
:
C
Metamerism is shown only by secondary amines, ethers and ketones.
Themetamerismarises when different alkyl groups are attached to same functional group.
Answer: Option D. -> dimethyl ether
:
D
Isomers have same molecular formula but differ in their structures or in spatial arrangement.
CompoundStructuralMolecularformulaEthanolC2H5OHC2H6OMethanolCH3OHCH4ODiethyletherC2H5OC2H5C4H10ODimethyletherCH3OCH3C2H6O
:
D
Isomers have same molecular formula but differ in their structures or in spatial arrangement.
CompoundStructuralMolecularformulaEthanolC2H5OHC2H6OMethanolCH3OHCH4ODiethyletherC2H5OC2H5C4H10ODimethyletherCH3OCH3C2H6O
Answer: Option C. -> Nonane
:
C
Structure of 2-methyl-3-ethylhexane is C|CH3H3−C2H5|CH−CH−CB2−CH2−CH3
It contains 9 carbon atoms.
So, a 9 carbon straight chain can be made which is nonane.
:
C
Structure of 2-methyl-3-ethylhexane is C|CH3H3−C2H5|CH−CH−CB2−CH2−CH3
It contains 9 carbon atoms.
So, a 9 carbon straight chain can be made which is nonane.
Answer: Option C. -> Molecular formula
:
C
The compounds which have the same molecular formula but differ in arrangement of atoms in a molecule are called isomers.
:
C
The compounds which have the same molecular formula but differ in arrangement of atoms in a molecule are called isomers.
Answer: Option D. -> Dimethyl ether
:
D
Dimethyl ether would be the functional isomer of ethanol. Both have the molecular formula of C2H6O but one is an ether and the other is an alcohol.
Functional isomers are the ones with same molecular formula but different functional group.
:
D
Dimethyl ether would be the functional isomer of ethanol. Both have the molecular formula of C2H6O but one is an ether and the other is an alcohol.
Functional isomers are the ones with same molecular formula but different functional group.
Answer: Option D. -> All
:
D
CH3CH2OCH2CH3andCH3OCH2CH3−−−−−−−−−−−−metamersCH3CH2CH2CH2CH2OHandCH3CH2OCH2CH3−−−−−−−−−−−functionalisomers
CH3CH2CH2CH2OHandCH3CH2CHOHCH3
:
D
CH3CH2OCH2CH3andCH3OCH2CH3−−−−−−−−−−−−metamersCH3CH2CH2CH2CH2OHandCH3CH2OCH2CH3−−−−−−−−−−−functionalisomers
CH3CH2CH2CH2OHandCH3CH2CHOHCH3