Chemical Engineering - Petroleum Refinery Engineering
Exercise :: Petroleum Refinery Engineering - Section 2
| 1. |
Presence of aromatics in |
| A. |
diesel increases its cetane number. | | B. |
kerosene increases its smoke point. | | C. |
petrol increases its octane number. | | D. |
all (a), (b) and (c). |
Answer: Option C
Explanation:
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| 2. |
Choose the correct statement regarding thermal cracking. |
| A. |
Moderate changes in operating temperature does not change the depth of cracking. | | B. |
Increased residence time results in the decreased severity of cracking. | | C. |
At low pressure, the yield of lighter hydrocarbons are more. | | D. |
Greater depth of cracking gives lower octane number gasoline. |
Answer: Option D
Explanation:
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| 3. |
A typical yield of diesel in straight run distillation of crude oil may be about __________ percent. |
Answer: Option A
Explanation:
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| 4. |
Which is almost absent in crude petroleum? |
| A. |
Olefins | | B. |
Mercaptans | | C. |
Naphthenes | | D. |
Cycloparaffins |
Answer: Option A
Explanation:
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| 5. |
Naphthenic acid is a/an __________ compound. |
| A. |
sulphur | | B. |
nitrogen | | C. |
oxygen | | D. |
none of these |
Answer: Option C
Explanation:
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