Advertisements
Advertisements
प्रश्न
Ice is kept in a double-walled container. Why?
उत्तर
Ice is kept in a double-walled container so as to prevent melting of ice from the heat absorbed present in the immediate surroundings. The vacuum present in between the two walls prevents the transfer of heat from the first to the second wall and hence the ice remains in the solid form for a longer time period.
APPEARS IN
संबंधित प्रश्न
What is heat ? State its S.I. unit.
Define the term calorie. How is it related to joule (the S.I. unit of heat)?
Complete the following sentence:
CGS units of heat is _________
When an object is heated, the molecules that make up the object
Why does the bottom of a lake not freeze in severe winter though the surface is all frozen?
______ is a form of energy.
In the past, people used to rub two wooden pieces together to light fire.
In which of the following, chemical energy is converted into heat energy?
On a cold day, it is hard to open the lid of a tight container. But when you gently heat the neck you can easily open the lid. why?
