Question

Choose the most appropriate option from the list given below to fill in the blanks.

[NO, Nessler’s reagent, NO_2, Iron, brown ring, magnesium, Haber’s, Ostwald, Iron (II) sulphate, Hydrogen, Iron (III) sulphate]

In ______ test, freshly prepared ______ solution is used.

Answer 1

In brown ring test, freshly prepared iron (II) sulphate solution is used.

Explanation:

In the brown ring test for nitrate ions, freshly prepared iron(II) sulphate solution is used.