ORGANIC CHEMISTRY
1. Which equation represents the combustion of methane with the products collected at 120 °C?
A CH4(l) + 2O2(g) → CO2(g) + 2H2O(l)
B CH4(g) + 2O2(l) → CO2(s) + 2H2O(l)
C CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)
D CH4(l) + 2O2(l) → CO2(l) + 2H2O(s)
2. The structure of butan-1-ol is shown.
![978_figure.jpg](https://secure.tutorsglobe.com/CMSImages/978_figure.jpg)
Which structure is an isomer of that shown above?
![1213_figure1.jpg](https://secure.tutorsglobe.com/CMSImages/1213_figure1.jpg)
3. The diagram shows the fractional distillation of petroleum.
![640_figure2.jpg](https://secure.tutorsglobe.com/CMSImages/640_figure2.jpg)
Which statements about fractions X and Y are correct?
|
X burns more easily than Y |
X has a higher boiling point than Y |
A |
yes |
yes |
B |
yes |
no |
C |
no |
yes |
D |
no |
no |
4. Which set contains all the possible combustion products of methane, CH4?
A carbon, carbon dioxide, carbon monoxide and water
B carbon, carbon monoxide and hydrogen
C carbon dioxide, carbon monoxide, hydrogen and water
D carbon monoxide and water
5. The structures of two compounds are shown.
![301_Figure3.jpg](https://secure.tutorsglobe.com/CMSImages/301_Figure3.jpg)
Which statement about these two compounds is correct?
A They are both hydrocarbons.
B They are both saturated compounds.
C They are in the same homologous series.
D They are isomers of each other.
6. Equal masses of coconut oil, butter, margarine and palm oil are separately dissolved in an organic solvent. A few drops of aqueous bromine are added to each solution and the mixtures are shaken.
The table shows the results. Which sample contains the most unsaturation?
|
sample |
colour of mixture |
A |
butter |
orange |
B |
coconut oil |
dark orange |
C |
margarine |
yellow |
D |
palm oil |
colourless |
7. When an animal fat is boiled with aqueous sodium hydroxide, a soap and glycerol are formed.
This reaction is an example of
A esterification. B fermentation.
C hydrolysis. D polymerisation.
8. The structure of the monomer of Perspex is shown.
![1924_Figure4.jpg](https://secure.tutorsglobe.com/CMSImages/1924_Figure4.jpg)
Which description of Perspex is correct?
|
type of polymer |
polymer formed by |
A |
carbohydrate |
condensation polymerisation |
B |
ester |
addition polymerisation |
C |
hydrocarbon |
addition polymerisation |
D |
polyester |
condensation polymerisation |
9. The apparatus shown was set up to prepare ethanoic acid from ethanol.
![1276_Figure5.jpg](https://secure.tutorsglobe.com/CMSImages/1276_Figure5.jpg)
What was the purpose of the condenser?
A to make sure air does not react with ethanol
B to stop ethanoic acid changing back to ethanol
C to stop ethanol being converted into ethane
D to stop ethanol vapour escaping
10. Which compound, on combustion, never forms soot?
A carbon monoxide B ethanol C ethane D methane
11. The molecular structure of a hydrocarbon is shown below.
![1792_Figure6.jpg](https://secure.tutorsglobe.com/CMSImages/1792_Figure6.jpg)
Which structure is an isomer of this hydrocarbon?
![1435_Figure7.jpg](https://secure.tutorsglobe.com/CMSImages/1435_Figure7.jpg)
12. Octane is an alkane present in petrol.
What are the products when octane is completely burned in air?
A carbon dioxide and hydrogen
B carbon dioxide and water
C carbon monoxide and water
D carbon monoxide, carbon dioxide and water
13. Which type of reaction occurs when soap is formed from fats?
A hydrolysis B polymerization C fermentation D substitution
14. Which of these equations does not represent an addition reaction?
A CH2Cl2 + Cl2 → CHCl3 + HCl
B C2H4 + Br2 → C2H4Br2
C nC2H4 → -(CH2 - CH2)-n
D C3H6 + H2O → C3H7OH
15. A polymer has the structure shown.
![2426_Figure9.jpg](https://secure.tutorsglobe.com/CMSImages/2426_Figure9.jpg)
What is the molecular formula of the monomer?
16. What is the linkage between the units in fats and also in Terylene?
![808_Figure10.jpg](https://secure.tutorsglobe.com/CMSImages/808_Figure10.jpg)
17. The diagram shows, by percentages, the principal large-scale uses of chlorine.
![1072_Figure11.jpg](https://secure.tutorsglobe.com/CMSImages/1072_Figure11.jpg)
What is the total pecentage of chlorine used in making organic compounds?
A 34% B 54% C 61% D 73%
18. Which product is not manufactured using calcium carbonate?
A cement B chlorine C glass D iron
19. Which pair of structures are isomers of each other?
![1844_Figure12.jpg](https://secure.tutorsglobe.com/CMSImages/1844_Figure12.jpg)
20. The diagrams show the structures of three hydrocarbons.
![1126_Figure13.jpg](https://secure.tutorsglobe.com/CMSImages/1126_Figure13.jpg)
Which statement is correct for all three compounds?
A They are isomers of each other.
B They have the same general formula.
C They have the same physical properties.
D They react with aqueous bromine.