Question

State two conditions necessary to liquify a gas.

Answer 1

Hint: Any gas can be condensed when the gas has been presented to the high pressing factors and low temperatures. The pressing factor that must be applied just as the temperature relies upon the atomic powers of the gas particles. There is a cutoff to the temperature past which how much pressing factor you apply the gas can't be condensed. This temperature is known as basic temperature.

Complete answer:
All in all, gases can be condensed by one of three general techniques:
by compacting the gas at temperatures not as much as its basic temperature;
by causing the gas to neutralize an outside power, making the gas lose energy and change to the fluid state by causing gas to tackle jobs against its own inward powers, likewise making it lose energy and melt.
In the primary methodology, the use of the pressing factor alone is adequate to make a gas change to a fluid. For instance, smelling salts has a basic temperature of . This temperature is well above room temperature, so it is generally easy to change over alkali gas to the fluid state just by applying an adequate pressing factor. At its basic temperature, that pressing factor is climates, albeit the cooler the gas is in any case, the less pressing factor is expected to make it consolidate.
In the subsequent methodology, it makes two strides. To begin with, the gas is cooled, then, at that point it is compelled to manage jobs against some outer framework. For instance, it very well may be passed through a little turbine, where it makes a bunch of sharp edges turn. The energy misfortune coming about because of driving the turbine may then be adequate to make the gas change to a fluid.
In the third methodology, the gas is compelled to go through a little spout or a permeable fitting. The change that happens in the gas during this interaction relies upon its unique temperature. On the off chance that that temperature is not exactly some fixed worth, known as the reversal temperature, then, at that point the gas will consistently be cooled as it goes through the spout or fitting.

Note:
The main benefit of condensing gases is that they would then be able to be put away and moved in considerably more conservative structure than in the vaporous state. Two sorts of condensed gases are broadly utilized monetarily consequently, melted flammable gas and condensed oil gas.