Philosopher’s wool is chemically
A). Aluminium oxide
B). Magnesium oxide
C). Zinc oxide
D). Calcium oxide
Zinc oxide
The compound zinc oxide (ZnO) is called philosopher's wool. Alchemists, as part of their rituals, would burn zinc in air and collect the residue, which formed into white woolly tufts. They called it lana philosophica in Latin, meaning philosopher's wool.
2. Which halide is used in making sensitive emulsion on photograhic film?
3. The chemical name of plaster of paris is -
4. The polymer used in making plastic crockery is
5. What are the major pollutants of cigarette smoke
6. Harvesting season of Kharif crop in India is
7. Which of the following is a monoatomic gas?
8. Gelatin is mostly used in making icecreams in order to