Question -
Answer -
(i) NaCl:

Therefore,it is a neutral solution.
(ii) KBr:

Therefore,it is a neutral solution.
(iii) NaCN:

Therefore,it is a basic solution.
(iv) NH4NO3
.
Therefore,it is an acidic solution.
(v) NaNO2

Therefore,it is a basic solution.
(vi) KF

Therefore,it is a basic solution.