Four students A,B,C and D noted the initial colour of the solutions in beakers I, II, III and IV. After inserting zinc rods in each solution and leaving it undisturbed for two hours, noted the colour of each solution again.

They recorded their observations in thr form of a table given below:

Which student noted the colour change in all four beakers correctly?

Options

A. A
B. B
C. c
D. D

Answer

A

Explanation

NA