Consider the following statements:
1. Permissible limit for turbidity is between 1 - 5 ppm
2. Tintometer is used to measurement of taste and odour.
3. Total kjeldahl nitrogen is a measure of both organic and ammonia nitrogen.
Which of the above statement are correct related to water quality parameter?
1
1 and 2
2
Only 1
3
2 and 3
4
1 and 3