📊 Principles of Food Preservation
Q. The total hardness of the potable water should be less than
  • (A) 500 ppm
  • (B) 700 ppm
  • (C) 900 ppm
  • (D) 1000 ppm
💬 Discuss
✅ Correct Answer: (A) 500 ppm

Explanation: the total hardness of the potable water should be less than 500 ppm. water having hardness more than 500 ppm is not safe for consumption.

Explanation by: Mr. Dubey
the total hardness of the potable water should be less than 500 ppm. water having hardness more than 500 ppm is not safe for consumption.

💬 Discussion

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