Advertisements
Advertisements
प्रश्न
Which of the following represent the suitable conditions for the liquefaction of gases ?
पर्याय
low temperature, low pressure
high temperature, low pressure
low temperature, high pressure
high temperature, high pressure
उत्तर
low temperature, high pressure
With the help of experiments it can be shown that at low temperature and high pressures, gases will liquefy. Because these factors affect the interaction force of molecules i.e. the molecules are able to establish a force of attraction between them on lowering the temperature and increasing pressure.
APPEARS IN
संबंधित प्रश्न
Convert the following temperature to Celsius scale:
300 K
What is the physical state of water at 250°C.
What is the name of the process in which a gas turns directly into a solid ?
Explain why, steam at 100° C is better for heating purposes than boiling water at 100° C.
Explain briefly, how gases can be liquefied.
What is sublimation ? Name two substances (other than ammonium chloride) which undergo sublimation.
The latent heat of vaporisation of water is :
When water is cooled to a temperature x, it gets converted into ice at temperature x by a process called P. And when ice at temperature x is warmed, it gets reconverted into water at the same temperature x in a process called Q.
- What is the value of temperature x in Kelvin ?
- What is the process P known as ?
- What is the name of energy released during process P ?
- What is the process Q known as ?
- What is the name of energy absorbed during process Q ?
Explain the term melting
Complete the blank with reference to interconversion of matter on the basis of kinetic theory-with the word ‘increase’, ‘decreases’, ‘gain’, ‘lose’, or ‘overcome’ in following case.
During the melting of solids, the inter-particles space __________.