Engineering :: Petroleum Refining Engineering
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| 1. |
Crude petroleum consists of |
| A. |
84-87 per cent carbon and 11-14 per cent hydrogen |
B. |
11-14 per cent carbon and 84-87 per cent hydrogen |
| C. |
54 per cent carbon and 25 per cent hydrogen |
D. |
70-72 per cent carbon and 5-7 per cent hydrogen |
Answer: Option A
Explanation:
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| 2. |
The general formula of paraffins is |
| A. |
CnH2n |
B. |
CnH2n-2 |
| C. |
CnH2n+2 |
D. |
CnH2n+1 |
Answer: Option C
Explanation:
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| 3. |
The general formula of naphthenes is |
| A. |
CnH2n+2 |
B. |
CnH2n-2 |
| C. |
CnH2n-6 |
D. |
CnH2n |
Answer: Option D
Explanation:
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| 4. |
The general formula of olefins is |
| A. |
CnH2n-2 |
B. |
CnH2n-4 |
| C. |
CnH2n+2 |
D. |
CnH2n |
Answer: Option D
Explanation:
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| 5. |
The general formula of aromatics is |
| A. |
CnH2n |
B. |
CnH2n+2 |
| C. |
CnH2n-6 |
D. |
CnH2n-4 |
Answer: Option C
Explanation:
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| 6. |
The general formula of mercaptans is |
Answer: Option C
Explanation:
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| 7. |
Which of the following is a sulphur compound? |
| A. |
Ethyl mercaptan |
B. |
Pyridine |
| C. |
Naphthenic acid |
D. |
Cumene |
Answer: Option A
Explanation:
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| 8. |
The nitrogen compounds in the petroleum products are responsible for |
| A. |
loss in catalyst activity |
B. |
colour instability of the products |
| C. |
formation of gums |
D. |
all of the above |
Answer: Option D
Explanation:
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| 9. |
The general formula of naphthenic acids is |
| A. |
CnH2nO2 |
B. |
CnH2n+2O2 |
| C. |
CnH2n-2O2n |
D. |
CnH2n-2O2 |
Answer: Option D
Explanation:
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| 10. |
Naphthenes |
| A. |
are unsaturated cyclic compounds |
B. |
are straight chain saturated compounds |
| C. |
are saturated cyclic compounds |
D. |
and paraffins have the same general formula CnH2n+2 |
Answer: Option C
Explanation:
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