What type of change is observed in manufacturing of plastics?
Irreversible change
Both reversible and irreversible change
Expansion
Making of plastic involves change in chemical structure and thus is an example of irreversible change.
Which of the following is both reversible and irreversible change?
Four students have their own opinion about reversible and irreversible changes. Who among the following is correct?
Rohan: Both physical and chemical changes are reversible.
Sam: Both physical and chemical changes are irreversible.
Tom: Physical changes are irreversible and chemical changes are reversible.
Riah: Chemical changes are irreversible and physical changes are reversible