Question

how an hand granite explodes

Answer 1

Once the soldier throws the grenade, the safety lever releases, the striker throws the safety lever away from the grenade body as it rotates to detonate the primer. The primer explodes and ignites the fuse (sometimes called the delay element). The fuse burns down to the detonator, which explodes the main charge.
I HOPE YOU WILL FIND IT HELPFUL
MARK ME BRAINLIEST AND THANKS

Answer 2

once the solider throws the grenade the safety lever releases the striker throws the safety lever away from grenade body as it rotates to denote the primer.the primer explodes and ignites the fuse(sometime called the delay elements) the fuse burns down to the detonator which explodes the main charge.