| 10 minutes maximum! (can you do it in 5?) |
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1. The structure for ethanol is:
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Q2-3: Ethanol can be produced by the reaction between ethene and steam.
2. The ethene is obtained from crude oil as shown:
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process 1 |
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process 2 |
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| CRUDE OIL |
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LONG CHAIN FRACTIONS |
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ETHENE |
Processes 1 and 2 are … |
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Process 1 |
Process 2 |
| A |
Fractional distillation |
polymerisation |
| B |
fermentation |
polymerisation |
| C |
Fractional distillation |
cracking |
| D |
fermentation |
cracking |
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3. The reaction between ethene and steam is a(n)
reaction. |
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Q4-6: Sugars such as glucose (C6H12O6) can be converted into ethanol by fermentation.
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4. The conditions required for this reaction to take place are …
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Substance added |
Temperature (oC) |
| A |
yeast |
30 |
| B |
acid catalyst |
100 |
| C |
yeast |
100 |
| D |
acid catalyst |
30 |
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5. The other product in this reaction is a gas which ….
- A. pops with a lighted splint
- B. turns limewater milky
- C. relights a glowing splint
- D. turns damp UI paper blue
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6. A concentrated solution of ethanol is obtained from the reaction mixture by …
- A. evaporation
- B. filtration
- C. chromatography
- D. fractional distillation
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7+8. Ethanol is very useful as a fuel.
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Ethanol
SirVir | CC 3.0 |
7. The balanced equation for the complete combustion of ethanol is…
- A. 2 C2H5OH + 3 O2 → 4 CO2 + 6 H2
- B. C2H5OH + 3 O2 → 2 CO2 + 3 H2O
- C. 2 C2H5OH + O2 → 4 CO + 6 H2
- D. C2H5OH + 2 O2 → 2 CO + 3 H2O
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8. Another use of ethanol is as a …
- A. solvent
- B. monomer
- C. glue
- D. flavouring
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Q9-10: Polymers can be either addition polymers or condensation polymers. |
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9. The monomers used for condensation polymers MUST contain …
- A. a double C=C bond
- B. two functional groups
- C. oxygen atoms
- D. at least four carbon atoms
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10. Polythene and nylon are both polymers. Select the correct type of polymer.
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polythene |
Nylon |
| A |
condensation |
condensation |
| B |
condensation |
addition |
| C |
addition |
condensation |
| D |
addition |
addition |
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