Question

which of the following words you can not add the prefix in to make it opposite in
meaning
a) Possible
b) Patiently
c) Active
d) Purity​

Answer 1

d. purity.

opposite of purity is impurity not inpurity.

Answer 2

I think the ques should be'im' not 'in', then only the correct answer will come I.e. c