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प्रश्न
Fill in the following blank with suitable words :
When steam condenses to form water, heat is .......................
उत्तर
When steam condenses to form water, heat is released.
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संबंधित प्रश्न
Tick the most appropriate answer.
Chemical changes involve
The boiling point of alcohol is 78° C. What is this temperature on Kelvin scale ?
State one condition necessary to liquefy gases (other than applying high pressure).
How is ammonia gas liquefied ?
How does perspiration or sweating help keep our body cool on a hot day ?
What is sublimation ? Name two substances (other than ammonium chloride) which undergo sublimation.
Name the phenomenon which causes the following changes:
Conversion of ice into water
There are large intermolecular gaps in
Who am I?
I dissolve in water, but not in kerosene.
Give the reason for the following
Solids cannot be compressed, but gases are highly compressible.
