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ICSE Class 10 Chemistry 2023 Paper

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Question : 71 of 88
Marks: +1, -0
Group of organic compounds where the successive members follow a regular structural pattern, successive compounds differ by a 'CH2\mathrm{CH}_2' group.
Solution:  
Homologous series e.g. Alkane
CH4Methane+CH2→C2H6Ethane+CH2\underset{\text{Methane}}{\mathrm{CH}_4} + \mathrm{CH}_2 \rightarrow \underset{\text{Ethane}}{\mathrm{C}_2\mathrm{H}_6} + \mathrm{CH}_2 →C3H8Propane.\rightarrow \underset{\text{Propane.}}{\mathrm{C}_3\mathrm{H}_8}
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