Question

9. 2. Answer the following questo
(1) What makes Indra's vajra or weapon invincible ?​

Answer 1

This asura was the recipient of a boon which made him invulnerable to any known weapon. ... Vishnu revealed to Indra that only weapons made from the thunder-containing (called in Sanskrit as Vajra) diamond bones of the sage Dadhichi could kill Vritra.