Question

State whether true or false.

Test tubes are made of borosil glass as it does not crack on heating.

• A. True
• B. False

Answer 1

The correct option is A True

Test tubes are made of borosil glass. As the coefficient of thermal expansion of borosil glass is low, the thermal stresses under a given temperature gradient are consequently low and the glass can withstand higher temperature gradients and also sudden temperature changes. Hence the test tubes made up of borosil glass does not crack on heating.