Question

1 TCU (True Color Unit) is equivalent to _____

(a) The color produced by 1 g of platinum cobalt

(b) The color produced by 1 mg of platinum cobalt

(c) The color produced by 1 mg of platinum cobalt in 1L of distilled water

(d) The color produced by 1 mg of platinum cobalt in 1mL of distilled water

The question was posed to me by my school teacher while I was bunking the class.

My doubt stems from Physical characteristic of Water in portion Quality of Water of Environmental Engineering

Answer 1

The correct option is (c) The color produced by 1 mg of platinum cobalt in 1L of distilled water

Easiest explanation: 1 TCU (True Color Unit) is equivalent to color produced by 1 mg of platinum cobalt in 1L of distilled water. The true color unit is also called a Hazen unit.