CBSE Class 10 Science 2019 Outside Delhi Set 2

Question : 9

Total: 11

Which compounds are called (i) alkanes, (ii) alkenes and (iii) alkynes ? C4H10 belongs to which of these? Draw two structural isomers of this compound.

Solution:

(i) The hydrocarbons in which carbon atoms are connected by only single covalent bonds are called alkanes.
(ii) The hydrocarbons in which carbon atoms are connected by double bond are called alkene.
(iii) The hydrocarbons in which carbon atoms are connected by triple bond are called alkynes.
C4H10 belongs to alkane.
Structural Isomers of C4H10 :

CH3−CH2−CH2−CH3

(a)

CH3−

‌‌‌‌CH3

−CH3

(b)

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