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.
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
Kerosene contracts on heating.
The increase in length of a metal rod depends on
Iron rims are heated before they are fixed on the wooden wheels.
An iron washer is heated. State the effect on its internal diameter.
Give scientific reason.
An ordinary glass bottle cracks when boiling water is poured into it, but a borosil glass bottle does not.
Give scientific reason.
The telephone wires which sag in summer become straight in winter.
What is meant by thermal expansion?
Distinguish between a clinical and a laboratory thermometer.
Give reasons for the following:
Telephone wires sag in summer.
