Question

How did parashuram realizes that karna was not brahman

Answer 1

once a time parashuram was sleeping in the lap of karan and an insect come there and bite karn.insect biting constantly that made him felt very pain but he might thought that if he did any activity to get rid of that pain his teacher sleep was intervene.so as a obedient student he tolerate all the pain.when parashuram woke up he seen the condition of karn and he knew that this constant pain was not bearable for a brahman,this type of pain is only tolerated by a kshtryia people.

Explanation:

so he realise that karn was not belongs to brahman family.

i think now you understand the concept behind this.

Answer 2

Explanation:

by this parsuram realized karna was not a brahman