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CBSE Class X Science 2017 Set 3 Question Paper with Solutions

Question : 1

Solution :
The molecular formula of the 2nd and 3rdmembers of a homologous series where the first member is ethyne (C2H2) is formed by adding –CH2:-
2nd member of alkyne series = propyne
(C3H4)CH3CH2CCH

3rd memberof alkyne series = butyne
(C4H6)CH3CH2CCH
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