why does white Zn0(s) becomes yellow upon heating ?

Why does white ZnO(s) becomes yellow upon heating?

Why does white ZnO(s) becomes yellow upon heating ?

ZnO is white when cold and yellow when heated. It is due to the development of-

Why does table salt, some times appear yellow in colour?

What is chlorine - water ? Why does chlorine water lose its yellow colour when left undisturbed ?

Why does a dry cell becomes dead after a long time even if it has not been used?

Explain why all the plants become tall in F_1 generation of Mendel’s monohybrid cross write Mendel’s Iaw of independent assortment.

(a) Based on the nature of intermolecular forces, classify the following solids: Silicon carbide, Argon. (b) ZnO turns yellow on heating. Why? ( c) What is meant by groups 12-16 compounds? Give an example.

(a) Why does the colour of NaCl turn yellow when it is heated in an atmosphere of sodium vapour? (b) What is curie temperature?