(1) II and III(2) II and III
(3) III and IV(4) II and IV
"\n">

A student took four test-tubes containing solutions of different colours marked I, II, III and IV as shown here. The test-tubes containing copper sulphate solution and ferrous sulphate solution could be the tubes:


(1) II and III(2) II and III
(3) III and IV(4) II and IV
"\n


Correct answer: (4) II and IV

Explanation: The copper sulphate solution is of blue colour and iron sulphate is of pale green colour.

Updated on: 10-Oct-2022

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