Question

A tightly fitted cork on a test tube is blown off if thr test tube is heated. Give reasons​

Answer 1

Explanation:

Actually atmospheric pressure on the cork and frictional force on the cork created by the mouth of the test tube . If the internal pressure becomes greater than the external pressure plus frictional force acts on the cork and as a result the cork will come loose of the of the test tube . Hope this helps you .

Answer 2

Answer:

By burning the gasses in test tube

Explanation:

Because when the gases like in test tube, when the gases burn so the pressure generate from burning of gases find the way to go out from test tube