Question

When butter is kept in the air at room temperature then it start bad smelling because:
(a) it is saturated
(b) it is unsaturated
(c) bacterial action degrades it
(d) it have large number of it H2 atoms

Answer 1

When butter is kept in the air at room temperature then it start bad smelling because "bacterial action degrades it".

Answer 2

When butter is kept in the air at room temperature then it start bad smelling because bacterial action degrades it.