Can a body be regarded in a rest as well as at motion in same te

Of course !  The speed, acceleration, and direction of an object completely depend on the frame of reference in which they're measured.

Example:

You're sitting in a comfy chair, reading a book.  In another comfy chair next to you, a lady is knitting a sweater.  You see that SHE is at rest, and she sees that YOU are at rest.

Except that both of you are sitting in comfy chairs in Row-27 of a passenger airliner.  A person on the ground, watching your plane fly over, sees that both of you are moving east at almost 500 miles per hour.

Are you REALLY at rest ?  Are you REALLY moving at almost 500 mph ? ?

YES !  

It just depends on who is doing the measuring, and how HE is moving.

it is the second option.

the temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.