Question

What happens to the elastic property of a substance after annealing (cooling slowly after heating)?
(A) Increases
(B) Decreases
(C) Remain as such
(D) Becomes zero

Answer 1

Hint: Chemical substances are the combination of different atoms and chemical elements. Generally, chemical substances possess some properties like elasticity and brittleness. Chemical substances cooled after heating leads to the increase in brittleness and decreases in elastic properties.

Complete answer:
Atoms are the tiny particles and the combination of atoms forms chemical substances. Each chemical substance has its own molecular formula and has its own properties. Some of the possessing properties of chemical substances were elastic properties.
So many chemical substances have elastic properties like stretchable. Brittleness is also one of the properties exhibited by chemical substances. It is easily breakable.
When chemical substances like ceramics, tiles and marbles are heated and after some time keep them for cooling. This process can be called as annealing. When chemical substances undergo annealing, brittleness increases; it means these chemical substances can be easily breakable. This means the elastic properties were reduced.
As easily breakable means they lack elasticity, which means the elastic properties decrease after annealing.
Thus, option B is the correct one.

Note:
The stones are chemical substances like tiles, marbles and ceramic things usually undergo the process of annealing. These all items are easily breakable means having the property of brittleness. The brittleness is inversely proportional to the elastic properties of chemical substances.