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Question Question 2(v)
(a) Draw the structural formula for the following.
(1) 1,1-dichloroethane
(2) Butyne
(3) Ethan-1-al
(b) Name the following organic compounds in IUPAC system.

(a) Structural formulae are shown below:
(1) 1,1-dichloroethane

(2) Butyne

(3) Ethan-1-al

(b) IUPAC names of the organic compounds are:
(1) 2-propanone
(2) 2,3-dimethyl butane