It will kill someone
A 22 caliber bullet is 22/100 inches in diameter. A 7.62 mm bullet is 30 caliber or 30/100 inches in diameter there is no such thing as a 7.62 caliber bullet
The .22 caliber bullet is ABOUT .22 inches wide. A .32 bullet is about .32 inches wide. The bullet will also be heavier due to size.
NO!!! DO NOT ATTEMPT THIS!!!
The .22 bullet is smaller than the 9mm in size, (about 6mm) and is lighter in weight.
A rifle that shoots a .22 caliber bullet.
not much
It is possible.
as far as it wants
It is a bullet for a .22 caliber rifle which is very quiet as the bullet travels slower than the speed of sound
unknown
Assuming you mean a bullet fired from a .22 caliber handgun, the answer is, yes, it can, but it depends on several variables.
If you mean "farther" yes, generally speaking, a .22 will travel further than a .45. The .45 is a much heavier bullet and loses velocity at a faster rate.