Kit Library / Science / Organic Chemistry
⚡ Topic Learning KitIsomerism
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What you'll study, topic by topic
Isomerism in Organic Chemistry
~8 min · full explanation, examples & memory tricks in the app
Try the smart MCQs from this kit
26 questions laddered from warm-up to topper-level, each with an explanation. A taste:
Which of the following best defines isomers?
BeginnerShow answer & explanation
Compounds with the same molecular formula but different structures
Isomers are compounds that have the same molecular formula but different arrangements of atoms or spatial orientations, leading to different structures.
Which type of isomerism is exhibited by butane and isobutane?
BeginnerShow answer & explanation
Chain isomerism
Butane (n-butane) and isobutane (2-methylpropane) have the same molecular formula C4H10 but differ in the branching of the carbon chain, which is chain isomerism.
Which of the following pairs are functional group isomers?
IntermediateShow answer & explanation
Ethanol and dimethyl ether
Ethanol (C2H5OH) and dimethyl ether (CH3OCH3) both have the molecular formula C2H6O but contain different functional groups (alcohol vs ether), so they are functional group isomers.
Which of the following compounds shows geometrical isomerism?
IntermediateShow answer & explanation
2-butene
2-butene (CH3-CH=CH-CH3) has a carbon-carbon double bond with different groups attached to each doubly bonded carbon, allowing cis and trans isomers. 1-butene and 2-methylpropene do not show geometrical isomerism because one carbon of the double bond has identical substituents.
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