Advertisements
Advertisements
प्रश्न
Give reason for the following
An ordinary glass bottle cracks when boiling water is poured into it, but a borosilicate glass bottle does not.
Advertisements
उत्तर
The reason is that the borosilicate glass does not expand much on being heated and therefore they do not crack.
APPEARS IN
संबंधित प्रश्न
What do you understand by thermal expansion of a substance?
One rod of copper and another identical rod of iron are heated to the same rise in temperature. Which rod will expand more? Give reason.
In the ball and ring experiment, if the ball after heating is left to cool on the ring for sometime, the ball again passes through the ring. Explain the reason.
Why is one end of a steel girder in a bridge kept on rollers instead of fixing it in pillar?
Give scientific reason.
The telephone wires which sag in summer become straight in winter.
Define the following term:
Coefficient of cubical expansion
Give reasons for the following:
In cold countries, water pipes burst in winter.
Solids ______ on heating and ______ on cooling.
What difference do you think heating the solid will make in their molecules?
