Chemically,philosopher's wool is

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(A) When zinc is burned in the presence of air,woolly tufts form,which is known as 'Lana philosophica' in Latin. 'Lana philosophica' means philosopher

Vedclass · Accepted Answer

$ZnO$

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(A) When zinc is burned in the presence of air,woolly tufts form,which is known as 'Lana philosophica' in Latin. 'Lana philosophica' means philosopher's wool. The woolly tufts consist of zinc oxide $(ZnO)$.Zinc sulphide $(ZnS)$ is known as zinc blende.$ZnO_2$ is known as zinc peroxide.$ZnSO_4$ is known as zinc sulphate.We can prepare philosopher's wool by burning zinc in the presence of oxygen or by reacting zinc with steam:$Zn + 1/2 O_2 ightarrow ZnO$$Zn + H_2O 	ext{ (steam)} ightarrow ZnO + H_2$Zinc oxide is used in ointments for skin diseases,as a white pigment in paints,and in rubber,plastic,cosmetic,and battery industries. Due to its wool-like texture,it is commonly known as philosopher's wool.

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