Environmental Chemistry Question 31

Question: What is the concentration of dissolved oxygen in cold water-

Options:

A) 5 ppm

B) 10 ppm

C) 200,000 ppm

D) 100 ppm

Show Answer

Answer:

Correct Answer: B

Solution:

[b] In cold water, dissolved oxygen can reach a concentration upto 10 ppm, whereas oxygen in air is about 200, 000 ppm.