Everyday Science · Everyday & Industrial Chemistry · page 12 of 17

Industrial Chemical MCQs with Answers

Includes 15 past paper MCQs (marked).

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Industrial Chemical Processes MCQs (111–120)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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111.
The harvesting is most important step of ?
Correct Answer: A. Preparation of sugar
One-liner
Harvesting is the most important step in the preparation of sugar because the quality and yield of sugar depend directly on the timely cutting and collection of sugarcane or sugar beet.
112.
Which monomer is polymerized to produce polythene?
Correct Answer: B. Ethylene
One-liner
The monomer polymerized to produce polythene is ethylene (also called ethene).
113.
50 Kg of coal tar fractional distillation produces benzene amount ?
Correct Answer: D. 0.5-1 Kg
One-liner
50 Kg of coal tar on fractional distillation yields approximately 0.5-1 Kg of benzene.
114.
Deaeration is a process of removal of from water.
Correct Answer: D. Dissolved gases
One-liner
Deaeration is the process of removing dissolved gases (such as oxygen and carbon dioxide) from water.
115.
To kill bacteria in filtration plant is used.
Correct Answer: B. Chlorine
One-liner
Chlorine is used to kill bacteria in filtration plants.
116.
Galvanized iron sheets have on them a coating of ?
Correct Answer: B. Zinc
One-liner
Galvanized iron sheets have a coating of zinc to protect them from rusting.
117.
Electrolysis of brine gives?
Correct Answer: A. NaOH, Cl₂, H₂
One-liner
Electrolysis of brine (concentrated NaCl solution) yields NaOH (sodium hydroxide), Cl₂ (chlorine gas), and H₂ (hydrogen gas).
118.
Past Paper MCQ
Cooking oil can be converted into vegetable ghee by the process of ?
Correct Answer: D. Hydrogenation
One-liner
Cooking oil is converted into vegetable ghee by the process of Hydrogenation.
119.
What is the industrial method used to prepare polythene?
Correct Answer: A. Polymerization of ethylene
One-liner
Polythene is industrially prepared by the polymerization of ethylene.
120.
Which of these chemicals is NOT used in the manufacturing of paper?
Correct Answer: D. All of these
One-liner
All of the listed chemicals — sodium hydroxide, chlorine, and calcium bisulfite — are actually used in paper manufacturing, so the correct answer is All of these.

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Industrial Chemical MCQs with Answers

Industrial Chemical Processes MCQs (111–120)

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