Fish in an aquarium require oxygen to live, which is usually done by pumping air into the fish tank using a mechanical pump. If all other things remain constant, the most effective transfer of oxygen to water comes from:

Submitted by: Administrator
1. small bubbles of air
2. large bubbles of air
3. bubbling of cold air
4. slow bubbling of air

Answer: A
Submitted by: Administrator

Read Online Chemistry Job Interview Questions And Answers