Environmentalmedium · Past Paper
What is the pH value of 'normal' unpolluted rain?
A7.0
BAround 5.6
C3.0
D9.0
✓ Correct Answer: B — Around 5.6
Rain is naturally slightly acidic (pH 5.6) due to dissolved carbon dioxide forming weak carbonic acid.
Share this question
More from Environmental
- The process of converting atmospheric nitrogen into a form plants can use is called:
- What is the main source of CFCs in the environment?
- Which gas has the highest concentration in the atmosphere after Nitrogen and Oxygen?
- What is the unit of measurement for noise intensity?
- Global warming potential is compared with which gas as a reference (value = 1)?