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CBSE Class 10 Science 2015 Term II Outside Delhi Set 2

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Question : 6 of 12
Marks: +1, -0
What is meant by homologous series of carbon compounds? Classify the following carbon compounds into two homologous series and name them.
C3H4, C3H6′ C4H6′ C4H8′ C5H8, C5H10.\mathrm{C}_3\mathrm{H}_4, \ \mathrm{C}_3\mathrm{H}_{6}^{'} \ \mathrm{C}_4\mathrm{H}_{6}^{'} \ \mathrm{C}_4\mathrm{H}_{8}^{'} \ \mathrm{C}_5\mathrm{H}_8, \ \mathrm{C}_5\mathrm{H}_{10} .
Solution:  
A series of carbon compounds in which the same functional group substitutes for hydrogen in a carbon chain is called homologous series.
Alkynes −C3H4 C4H6 C5H8- \mathrm{C}_3\mathrm{H}_4 \ \mathrm{C}_4\mathrm{H}_6 \ \mathrm{C}_5\mathrm{H}_8
Alkene −C3H6, C4H8, C5H10- \mathrm{C}_3\mathrm{H}_6, \ \mathrm{C}_4\mathrm{H}_8, \ \mathrm{C}_5\mathrm{H}_{10}
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