Chemistry
Grade-10
Easy
Question
Pollution causes the pH of rainwater to fall below 6. What is this type of rain called?
- Acid rain
- Polluted rain
- Low pH rain
- Non-point source pollution
Hint:
Acid rain causes pollution.
The correct answer is: Acid rain
Pollution causes the pH of rainwater to fall below 6. This type of rain called acid rain.
Acid rain is rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH). Most water, including drinking water, has a neutral pH that exists between 6.5 and 8.5, but acid rain has a pH level lower than this and ranges from 4–5 on average. The more acidic the acid rain is, the lower its pH is.
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