MCQs
Total Questions : 3103
| Page 30 of 311 pages
Answer: Option A. -> Reverse osmosis
Answer: Option D. -> All of the above
Answer: Option A. -> Silica
Answer: Option D. -> Leaching
Answer: Option B. -> Cure pimples & dandruff
Answer: Option B. -> Cl₂
Answer: Option D. -> Remove arsenic & sulphur
Answer: Option A. -> Moving
Answer: Option C. -> V₂O₅