Question

Q.12 For the removal of dissolved oxygen,
which one is an ideal chemical
O a) Hydrazine
O b) 40% aquaeous hydrazine solution
O c) Calcutated quantity of ammonia
O d) Na2S​

Answer 1

Answer:

OPTION D I THINK SO

Answer 2

Solution:

$Na_{2} S$ is the correct answer for the removal of dissolved oxygen.

Explanation:

1. Sodium sulfite($Na_{2} S$) is primarily used in water treatment as oxygen scavenger agent, to treat water being fed to steam boilers to avoid corrosion problem.
2. Hence, option d is correct answer.