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5346. Which of the following is a constituent of coffee?

September 7, 2025 by Admin

Caffeine

Nicotine

Calgon

Lignin

✅ The correct answer is option A.

Categories Chemical Engineering, Chemical Process MCQs, Engineering Tags Chemical Engineering MCQs, Chemical Process MCQs, Engineering MCQs

5343. Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?

378. pH value of sludge during alkaline regression stage, is__________________?

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