Question
How gases can be liquefy?
✓
Answer
In general, gases can be liquefied by one of three general methods:
- By compressing the gas at temperatures less than its critical temperature.
- By making the gas do some kind of work against an external force, causing the gas to lose energy and change to the liquid state.
- By using the Joule-Thomson effect.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Draw a neat diagram of plant cell and label any three parts which differentiate it from animal cell.
Draw a flow diagram of the processes involved in obtaining gases like nitrogen, oxygen and argon from air.
Look at Figures 1, 2 and 3 given alongside and answer the following questions.
- What do these figures show all together?
- Which one is queen bee?
- Which one of them is the haploid, fertile male? What is it called?
- What is the status of the insect shown in the figure: individual/ social?
When we put our ear to a railway line, we can hear the sound of an approaching train even when the train is far off but its sound cannot be heard through the air. Why?
What provisions are made by local authorities for solid waste management ?
Explain various steps in hybridization of crop plants.
A ball of mass 0.5kg slows down from a speed of 5m/s to that of 3m/s. Calculate the change in kinetic energy of the ball. State your answer giving proper units.
Write any three applications (or use) of ultrasound.
What will happen if:
- Excess amount of fertilizer is added to a green lawn?
- Salt is added to cut pieces of raw mango.
Write down names of different types of plant tissues.