1. निम्नलिखित शब्दों से विशेषण बनाइए:-
अकस्मात्, कुल​

Iagree with the answer above

Generally spontaneous human combustion is something that still bewilders some, human combustion happens very rarely and doesn't affect the surrounding areas, so unless you want to set your self on fire, human combustion will remain spontaneous and very rare.