Question : Philosopher's wool is chemically
Option 1: Aluminium oxide
Option 2: Magnesium oxide
Option 3: Zinc oxide
Option 4: Calcium oxide
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Correct Answer: Zinc oxide
Solution : Correct Answer is Zinc oxide
Philosopher's wool refers to the chemical zinc oxide (ZnO). Alchemists would burn zinc in the air and collect the residue, which developed into white woolly tufts, as part of their rituals.The philosopher's wool is a term used to describe zinc oxide. Zinc oxide has the chemical formula ZnO and is insoluble in water. It is a fine, white, non-toxic, insoluble powder that is generated when zinc is heated.
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Question : Magnalium is an alloy of
Option 1: Aluminium and Mangnesium
Option 2: magnesium and Tin
Option 3: Aluminium and Zinc
Option 4: Manganese and Magnesium
Question : The metallic contituents of hard water are:
Option 1: Magnesium calcium and tin
Option 2: Iron ,tin and calcium
Option 3: Calcium ,magnesium and iron
Option 4: Magnesium ,tin and iron
Question : Carborundum is another name of
Option 1: Silicon Carbide
Option 2: Silicon Oxide
Option 3: Calcium Carbide
Option 4: Calcium Oxide
Question : Yellow spots on citrus leaves is due to deficiency of:
Option 1: Zinc
Option 2: Magnesium
Option 3: Boron
Option 4: Iron
Question : Chemical name of bleaching powder is
Option 1: Calcium chlorate
Option 2: Calcium hypochlorite
Option 3: Calcium chloro hypochloride
Option 4: Calcium bi chloride
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