Chemical Engineering - Petroleum Refinery Engineering

1. 

Aniline point of the diesel is a measure of its __________ content.

A. aromatic
B. paraffin
C. olefin
D. naphthene

Answer: Option A

Explanation:

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2. 

Presence of sulphur in gasoline

A. leads to corrosion.
B. increases lead susceptibility.
C. decreases gum formation.
D. helps during stabilisation.

Answer: Option A

Explanation:

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3. 

Which of the following additives improves the cetane number of diesel ?

A. Amyl nitrate
B. Ethyl mercaptan
C. Napthenic acid
D. Tetra ethyl lead

Answer: Option B

Explanation:

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4. 

In catalytic cracking process, olefins crack __________ times faster than in thermal cracking process.

A. 100
B. 200-300
C. 1000-10000
D. 10

Answer: Option C

Explanation:

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5. 

Choose the correct statement.

A. Coking tendency increases with increasing molecular weight.
B. Coking tendency decreases with increasing molecular weight.
C. Higher pressure enhances coke formation.
D. Coking is an exothermic reaction.

Answer: Option A

Explanation:

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