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11 questions from this quiz
Carbon and hydrogen only
They have at least one double bond
CnH2nC_nH_{2n}CnH2n
C2H4C_2H_4C2H4
C3H6C_3H_6C3H6
The double bond is weaker
Addition reactions
Double bond breaks, new atoms added
Orange
It turns colourless
Less common
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