Advertisements
Advertisements
प्रश्न
What is the name of the process due to which dry ice changes into carbon dioxide gas ?
उत्तर
‘Sublimation’ causes dry ice to change into carbon dioxide.
APPEARS IN
संबंधित प्रश्न
What is the (a) common unit of temperature, and (b) SI unit of temperature ?
State whether the following statement is true or false :
Solid carbon dioxide is stored under low pressure.
How is ammonia gas liquefied ?
What is sublimation ? Name two substances (other than ammonium chloride) which undergo sublimation.
The latent heat of vaporisation of water is :
Give reasons:
Why a solid does not flow, but a liquid flows?
Give two examples of the following:
Substances which do not change their states.
State whether the following statement is true or false. If false write the correct statement.
Desirable changes are meaningful, while undesirable changes are unfavourable.
Select the correct answer from A, B, C, D & E for the statement given below:
The state of matter which has ___________ least density & no free surfaces.
Give the reason for the following
On heating a sublimable solid, the molecules break free & escape from the surface of the solid directly into vapour.
