Engineering Questions with Answers - Multiple Choice Questions
Chemical Technology MCQ’s – Synthetic Organic Chemical Industries – Petrochemicals
1 - Question
Which of the following is not a primary chemical?
a) Alcohol
b) Acetone
c) Acetic acid
d) Benzene
View Answer
Explanation: Some of the primary chemicals are Alcohol, Benzene, Toluene, and Acetone. Acetic acid is secondary chemical formed using acetylene from calcium carbide.
2 - Question
Naphtha and fuel cell produce synthesis gas by steam cracking. Is the statement true/false?
a) True
b) False
View Answer
Explanation: The statement is wrong because, they produce synthesis gas but by catalytic reforming and not by steam cracking. Petrochemical starting materials are made by steam cracking from naphtha and fuel oil.
3 - Question
Which of the following is a thermoplastic?
a) Polystyrene
b) Ethylene
c) Propylene
d) Ortho Xylene
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Explanation: Polystyrene is a thermoplastic where others are feedstock type petrochemicals. Some other thermoplastics are polypropylene, PVC, HDP, low density polyethylene etc.
4 - Question
Liquefied Petroleum gas contains propane which can be cracked. Is the statement true/false?
a) True
b) False
View Answer
Explanation: The statement is true as LPG extracted from natural gas contains butane and propane which can be cracked into olefins. LPG can be transported in pipelines as liquid
5 - Question
Hydro forming of petrochemical stocks doesn’t produce _______________
a) Benzene
b) Toluene
c) Xylene
d) Ethyl Benzene
View Answer
Explanation: Petrochemical stocks hydro forming produces BTX (toluene, benzene, Xylene) and hydrogen but not ethyl benzene. These are the principal raw materials.
6 - Question
Which of the following is a source of electrode for aluminum industry?
a) Naphtha and fuel oil
b) LPG
c) Petroleum coke
d) Ethane
View Answer
Explanation: Petroleum coke is a source of electrodes for aluminum electrode and it is also source of carbon for acetylene and calcium carbide. Naphtha and fuel oil, LPG, Petroleum coke are some of the principal raw materials.
7 - Question
Ethylene can be produced from ethane by ______________________
a) Catalytic cracking
b) Thermal cracking
c) Catalytic reforming
d) Hydro forming
View Answer
Explanation: Ethylene of about 75% yield can be produced from ethane (4% of natural gas) by thermal cracking. Most of the ethylene is produced from refinery gases.