`ZnO` is white cold and yellow when heated, it is due to the development of

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

The white ZnO turns yellow on heating because of

ZnO is white in colour, but when it is heated its colour turns yellow. Why does this change occur?

ZnO appears yellow on heating.

Assertion : ZnO becomes yellow when it is beated Reason: NaCI becomes yellow when heater in the presence of Na vapours due to anion vacancy