Q. Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water
A) Calcium
B) Magnesium
C) Chromium
D) Manganese
✔ Correct Answer: Manganese
Exam Insight
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A) Calcium
B) Magnesium
C) Chromium
D) Manganese
✔ Correct Answer: Manganese
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