GATE CH Chemical Technology PYQs & Answers

Questions 1–10 of 38. Imported answers require independent review unless marked reviewed.

In a traditional continuous Kraft (Sulfate) pulping process, consider the following major steps:

Bleaching (BL), Chiping (CH), Debaking (DE), Digestion (DI), and Pulp Washing (WA).

Which one of the following is the CORRECT sequence of steps for this process?

Your answerChoose one option.

DE → BL → WA → DI → CH

DE → CH → DI → WA → BL

DE → CH → WA → DI → BL

DE → BL → WA → CH → DI

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Which one of the following is produced by catalytic reforming of straight run gasoline and naptha?

Your answerChoose one option.

diesel oil

furnace oil

high octane gasoline

kerosene

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Urea has its major use as a solid fertilizer for nitrogen fixation. Which of the following is/are other application(s) of urea?

Your answerSelect all correct options. You can choose more than one.

manufacturing of resin and plastics

melamine production

muriatic acid production

sulphamic acid production

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To manufacture paper from (i) ____, the (ii) ____ must be freed from the binding matrix of (iii) ____ in the pulping step.

Which one of the following is the CORRECT option to fill in the gaps (i), (ii) and (iii)?

Your answerChoose one option.

(i) wood, (ii) cellulose fibers, (iii) lignin

(i) lignin, (ii) cellulose fibers, (iii) wood

(i) lignin, (ii) wood, (iii) cellulose fibers

(i) wood, (ii) lignin, (iii) cellulose fibers

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In the production of polyvinyl chloride (PVC) from ethylene and chlorine, the sequential order of reactions is

Your answerChoose one option.

Chlorination followed by Dehydrochlorination

Dehydrochlorination followed by Chlorination

Hydrogenation followed by Chlorination

Dehydrochlorination followed by Hydrogenation

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In the CONTACT PROCESS for manufacturing sulphuric acid, the reaction converting

Your answerChoose one option.

Exothermic and reversible

Endothermic and reversible

Exothermic and irreversible

Endothermic and irreversible

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In an ammonia manufacturing facility, the necessary hydrogen is generated from methane. The facility consists of the following process units -

P: Methanator, Q: CO shift converter, R: CO

stripper, S: Reformer, T: Ammonia converter

The correct order of these units, starting from methane feed is

Your answerChoose one option.

S, Q, R, P, T

P, Q, R, S, T

S, P, Q, R, T

P, S, T, Q, R

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For the electrolytic cell in a chlor-alkali plant, which of the following statements is/are correct?

Your answerSelect all correct options. You can choose more than one.

A membrane cell operates at a higher brine concentration than a diaphragm cell.

Chlorine gas is produced at the cathode.

Hydrogen gas is produced at the cathode.

The caustic product stream exits the anode compartment.

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Which of the following statements with reference to the petroleum/petrochemical industry is/are correct?

Your answerSelect all correct options. You can choose more than one.

Catalytic hydrocracking converts heavier hydrocarbons to lighter hydrocarbons.

Catalytic reforming converts straight-chain hydrocarbons to aromatics.

Cumene is manufactured by the catalytic alkylation of benzene with propylene.

Vinyl acetate is manufactured by reacting methane with acetic acid over a palladium catalyst.

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Which one of the following statements related to octane number is NOT correct?

Your answerChoose one option.

Linear alkanes with higher carbon number have higher octane number.

Branching in linear alkanes increases their octane number.

Catalytic reforming of hydrocarbons increases their octane number.

Gasoline quality is measured in terms of octane number.

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GATE CH Chemical Technology PYQs

How to practice Chemical Technology

Question 18

Question 24

Question 26

Question 11

Question 27

Question 28

Question 25

Question 28

Question 29

Question 15