Question

When using a crucible and lid, why must the crucible and lid be inspected for cracks before using?

Answer 1

If it has cracks it can shatter during heating due to temperature change.

Answer 2

Explanation:

A crucible and lid plays an important role in carrying out a reactions as they help the container or vessel to be tightly closed so the no other gases from the atmosphere can enter the vessel.

Moreover, it helps in maintaining the temperature of vessel.

Therefore, when the crucible and lid be inspected for cracks before using then it should not be used because during the reaction it is possible that it will break.