By adding 1 ml of Orthotolidine solution to 100 ml chlorinated water taken after contact period, the residual chlorine makes the colour of solution (A) Yellowish (B) Greenish (C) Bluish (D) Reddish

By adding 1 ml of Orthotolidine solution to 100 ml chlorinated water taken after contact period,
the residual chlorine makes the colour of solution
(A) Yellowish
(B) Greenish
(C) Bluish
(D) Reddish
by

1 Answer

Answer :

(A) Yellowish
by

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