Question

Frothing in Yamuna:

The primary reason behind the formation of the toxic foam is the high phosphate content in the wastewater because of detergents used in dyeing industries, dhobi ghats, and households. Yamuna's pollution level is so bad that parts of it have been labelled 'dead' as there is no oxygen in it for aquatic life to survive.

Predict the pH value of the water of river Yamuna if the reason for froth is the high content of detergents dissolved in it.

Options

• 10-11

• 5-7

• 2-5

• 7

Answer 1

10-11