ORGANIC CHEMISTRY PRACTICE TEST 1
1. Give four examples of organic compounds and their sources.
2. Arrange the following compounds in order of increasing boiling point.
i. 3-methylhexane
ii. 2, 2, 3-trimethylbutane
iii. Heptane
iv. 2, 3-Dimethylpentane
3. In each pair of compounds, which compounds has the higher boiling point?
Explain your choice.
i. Octane or 2, 2, 3-trimethylpentane
ii. 2, 2, 5-trimethylhexane or nonane
iii. Nonane or 2-methylheptane
4. i. Give four examples of fuel additives that can be used to increase the octane
number of petrol
ii. Explain the following terms;
a. Engine knocking
b. Pyrolysis
c. Reforming
d. Octane number
5. Write a balanced equation each for the complete and incomplete combustion of
cyclopentane
6. Draw structures for the following compounds
a. 4-t-butyl-2-2-dimethylheptane
b. 5-isopropyl-3, 3, 4-trimethyloctane
7. Draw the most stable chair conformation of
a. Ethyl cyclohexane
b. Isopropyl-1,1-dimethylcyclohexane
1. Give four examples of organic compounds and their sources.
2. Arrange the following compounds in order of increasing boiling point.
i. 3-methylhexane
ii. 2, 2, 3-trimethylbutane
iii. Heptane
iv. 2, 3-Dimethylpentane
3. In each pair of compounds, which compounds has the higher boiling point?
Explain your choice.
i. Octane or 2, 2, 3-trimethylpentane
ii. 2, 2, 5-trimethylhexane or nonane
iii. Nonane or 2-methylheptane
4. i. Give four examples of fuel additives that can be used to increase the octane
number of petrol
ii. Explain the following terms;
a. Engine knocking
b. Pyrolysis
c. Reforming
d. Octane number
5. Write a balanced equation each for the complete and incomplete combustion of
cyclopentane
6. Draw structures for the following compounds
a. 4-t-butyl-2-2-dimethylheptane
b. 5-isopropyl-3, 3, 4-trimethyloctane
7. Draw the most stable chair conformation of
a. Ethyl cyclohexane
b. Isopropyl-1,1-dimethylcyclohexane
