Combined Science Organic Chemistry

Label all the fractions.

a

b

c

d

e

naphtha

refinery gas

lubricating oil

diesel oil

petrol

kerosene

bitumen

Which fraction has the largest molecule?

Which fraction has the lowest boiling point?

Choose all the molecules that are alkanes.

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Choose all the molecules that are alkenes.

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Choose all the molecules that unsaturated.

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What are the products of complete combustion of hydrocarbon?

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Choose all the molecules that can decolourise bromine water.

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What is the name of the reactions of alkenes? (Hint: start with the letter 'a' and ends with 'n')

​ (a)   can be made through ​ (b)   of ​ (c)   ​ (d)   using high temperatures and catalyst.

• cracking
• long-chained
• alkanes
• Alkenes
• short-chained
• joining