JEE Mains Model Paper 1

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Question : 85 of 90

Marks: +1, -0

Which of the following forms a homologous series?

Ethane, ethylene, acetylene
Ethane, propane, butanone
Methanal, ethanol, propanoic acid
Butane, 2-methylbutane, 2,3-dimethyl butane

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