Question

Statement: Mothballs and camphor are examples of vaporization.
State whether the given statement is true or false.
A.True
B.False

Answer 1

Hint: Cohesive forces tie together the atoms or molecules of a liquid or solid, and these forces must be resolved until the atoms or molecules are removed to form vapour. There are chemical reactions which involve the resolution of these cohesive forces directly from the solid state to vapor form.

Complete step by step answer:
Vaporization is the conversion of a substance from the liquid or solid phase into gaseous phase. If conditions allow the formation of vapour bubbles within a liquid, the vaporization process is called boiling.

Now we understand what vaporization is. But there is an entirely different reaction, which also produces gaseous phase, but it is different from vaporization. It is known as sublimation.
The method of converting a solid into a gas without going into the liquid phase is sublimation. In order to sublimate a material, by heat or job, a certain energy must be transferred to the material. The energy used to sublimate a substance is unique to the identity the temperature of the substance.
Mothballs and camphor are substances that don't enter liquid phase to form vapor, instead they directly get converted into gaseous state via sublimation.

So, for the above question, the statement is false.

Note:
Earlier, mothballs were made primarily of naphthalene, but due to the explosive nature of the substance, nowadays mothballs are made up of dichlorobenzene. The solid, pungent, sickly-sweet odour frequently associated with mothballs is present in each of these formulations. Both of these compounds are sublimated, which means that they evaporate immediately into a gas from a solid state, which is poisonous to moths and moth larvae.