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4992. Phosphoric acid is prepared from

September 7, 2025 by Admin

Cryolite

Chalcopyrite

Rock phosphate

None of these

✅ The correct answer is option C.

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

4990. Baking soda is chemically represented by

4996. Dehydrogenation of isopropanol produces

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