1) What are the products of complete combustion? a) Carbon dioxide + water b) Carbon dioxide + carbon monoxide c) Carbon monoxide + water 2) Which poisonous gas is produced during incomplete combustion? a) Carbon dioxide b) Sulfur dioxide c) Carbon monoxide 3) Write the general equation for the cracking process a) Long Cahin alkane ---> short chain alkane b) Long Chain alkane ---> short chain alkene c) Long chain alkane ---> short chain alkane + alkene  4) State the conditions required for catalytic cracking a) Heat the hydrocarbons to vaporise them then pass the vapour over a catalyst b) High pressure and heat c) Stir in the catalyst 5) State the conditions required for steam cracking. a) Mix with steam b) Heat tovaporise hydrocarbons then mix with steam & heat to very high temperature c) High heat and pressure 6) What happens to boiling point and viscosity as length of carbon chain increases? a) Decrease b) Stays the same c) Increase 7) Why can different hydrocarbons be separated using fractional distillation? a) They have different bonds b) The have different viscosities c) They have different boiling points 8) In a fractionating column, where is the warmest part? a) Top b) Middle c) Bottom 9) Hydrocarbons with short carbon chains have low boiling points so are collected near the top of the fractionating column. True or false? a) True b) False 10) Bitumen is a long chain hydrocarbon with a high boiling point. True or false? a) False b) True

Organic Chemistry - 2

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