Can it possible lihghtning occur without any sound?how, explain it berifly

Dear Student,
No, it is not possible to see lightning without any sound.
Sound is like a by-product of lightning. Lightning occurs because of huge amount of charge transfer from one cloud to another.
In this process large amount of heat is produced. This heat sets air molecules in vibration and this is actually the sound.
It happens sometime that we sometimes do not hear any sound after lightning, that is because of some other atmospheric factors.
This do not mean that sound is not produced.
Regards