Question

Naphthalene Balls Disappear With Time Without Leaving Any Solid...Give Reason

Answer 1

Naphthalene balls sublime i, e they directly change from solid to gas, hence leave nothing behind

Answer 2

Heya,

Naphthalene balls disappears with time without leaving any solid because it undergoes sublimation absorbing heat from the surroundings.
Naphthalene balls are sublimable components.

SUBLIMATION:-
The process in which the solid on heating directing changes into gas without forming liquid and vice-versa.

Hope my answer helps you :)

Regards,
Shobana