Chemical Engineering - Petroleum Refinery Engineering

41. 

Antioxidants are added in petrol to

A. impart colour to it, for easy identification.
B. minimise the gum formation.
C. prevent icing of the carburettor.
D. prevent the lead build up in engines.

Answer: Option B

Explanation:

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42. 

Gasoline extracted from natural gas (by compression and cooling) is called the __________ gasoline.

A. polymer
B. unleaded
C. casing head
D. straight run

Answer: Option B

Explanation:

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43. 

Which of the following categories of gasoline has the highest lead susceptibility ?

A. Straight run gasoline
B. Platinum reformed gasoline
C. Catalytical cracked gasoline
D. Polymer gasoline

Answer: Option A

Explanation:

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44. 

Gum formation in stored gasoline is mainly due to the

A. alkylation of unsaturates.
B. presence of sulphur.
C. oxidation & polymerisation of unsaturates.
D. higher aromatic content.

Answer: Option B

Explanation:

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45. 

Flash point of an oil is determined by the

A. Pensky Martens apparatus.
B. Ramsbottom apparatus.
C. Saybolt viscometer.
D. Conradson apparatus.

Answer: Option A

Explanation:

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