Which of the following methods are employed for determination of free and combined chlorine residuals in water ? 1. Starch-iodide method 2. Orthotolidine method 3. Amperometric titration method 4. SNORT method 5. DPD method a) 1, 2, 4 and 5 b) 1, 2 and 3 only c) 3, 4 and 5 only d) 2, 3, and 4 only.

Which of the following methods are employed for determination of free and combined chlorine residuals in water ?
 1. Starch-iodide method 2. Orthotolidine method
 3. Amperometric titration method 4. SNORT method
 5. DPD method
 a) 1, 2, 4 and 5 b) 1, 2 and 3 only c) 3, 4 and 5 only d) 2, 3, and 4 only.
by

1 Answer

Answer :

a) 1, 2, 4 and 5
by

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