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On cracking medicinal paraffin a gas is evolved... - JAMB Chemistry 1998 Question

On cracking medicinal paraffin, a gas is evolved which gives a pop sound with a lighted splinter and an oily liquid which decolourizes bromine solution is also obtained. The products of the cracking are ?
A
carbon (IV) oxide and alkyne
B
carbon (ll) oxide and alkene
C
hydrogen gas and alkene
D
hydrogen gas and alkane
correct option: c
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