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Q: Potassium thiocyanate is used to colour both the water sample and the standard solution for the determination of:
  • A. Iron
  • B. Manganese
  • C. Calcium carbonate
  • D. None of the above
Correct Answer: Option A - Potassium thiocyanate is used to colour both the water sample and the standard solution for the determination of iron • The colour of water becomes brownish red due to the presence of iron and manganese and strains on the clothes. Quantity of iron and manganese in drinking water for domestic use is not more than 0.3 ppm. The amount of iron and manganese is determined by chlorimeter method.
A. Potassium thiocyanate is used to colour both the water sample and the standard solution for the determination of iron • The colour of water becomes brownish red due to the presence of iron and manganese and strains on the clothes. Quantity of iron and manganese in drinking water for domestic use is not more than 0.3 ppm. The amount of iron and manganese is determined by chlorimeter method.

Explanations:

Potassium thiocyanate is used to colour both the water sample and the standard solution for the determination of iron • The colour of water becomes brownish red due to the presence of iron and manganese and strains on the clothes. Quantity of iron and manganese in drinking water for domestic use is not more than 0.3 ppm. The amount of iron and manganese is determined by chlorimeter method.