1) Which of these are HYDROCARBONS? a) W & X b) W & Y c) X & Y d) All of them 2) What is the formula of an ALKENE with 8 carbon atoms ? a) C8H18 b) C8H16 c) C8H8 d) C4H8 3) Which of these are molecules of an UNSATURATED compound ? a) A & B b) B & D c) C & D d) A & C 4) Which of these compounds would turn orange bromine solution colourless? a) A & B b) B & D c) C & D d) A & C 5) Apart from no oxygen, what two other conditions are needed for a CRACKING reaction ? a) Low temperature and high pressure b) High temperature and low pressure c) High temperature and a catalyst d) Low temperature and a catalyst 6) What is the formula of the missing hydrocarbon in this cracking reaction? a) C5H8 b) C3H6 c) C3H8 d) C6H12 7) Which statement is true for POLYMERSIATION? a) The monomers need to be UNSATURATED and the polymers SATURATED b) Both are UNSATURATED c) The monomers need to be SATURATED and the polymers UNSATURATED d) Both are SATURATED 8) What reaction conditions are needed for POLYMERISATION? a) Low temperature and a catalyst b) High temperature, high pressure and a catalyst c) High temperature and low pressure d) Low temperature and high pressure 9) Which polymer is produced by the monomer shown ? a) W b) X c) Y d) Z 10) Poly-vinyl alcohol or PVA (top) is a polymer made from which monomer? a) 1 b) 2 c) 3 d) 4 11) Plastics are made from polymers. Which of these statements is NOT correct? a) Most plastics are not biodegradeable b) Most plastic monomers are made from crude oil which is non-renewable c) Some plastics release poisonous gases when burnt d) Most plastics cannot be recycled 12) Margarine is made by bubbling hydrogen gas through vegetabl/e oil. Which statement is NOT correct? a) The saturated vegetable oil is turned into unsaturated margarine b) The double bond in the oil moelcule is converted into a single bond c) This process is called HYDROGENATION d) The oil is turned into a substance which is solid at room temperature 13) Ethanol (alcohol) can be made by the hydration (reaction with steam) of ETHENE gas. What is the chemical formula of ethanol? a) C3H6O b) C2H5OH c) C2H6O2 d) C2H4OH 14) Ethanol can also be made when YEAST slowly converts GLUCOSE (sugar) into ethanol and carbon dioxide. What is the name of this process? a) Distillation b) Oxidation c) Fermentation d) Hydration 15) Which of these is an ADVANTAGE of the hydration of ethene over fermentation? a) It needs higher temperatures to work b) The ethene is made from crude oil c) The alcohol produced is not fit for human consumption d) The reaction is faster than fermentation

C1b alkenes

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