When pH of rain water is less than 8.2, it is called acid rain.
When pH of rain water is less than 8.2, it is called acid rain.
Tooth decay starts when the pH of the mouth is lower than 1.5.
Tooth decay starts when the pH of the mouth is lower than 1.5.
Our body works within the pH range of 7.0 to 7.8.
Our body works within the pH range of 7.0 to 7.8.
Living organisms can survive a wide range of pH change.
Living organisms can survive a wide range of pH change.
Correct Answer:
Our body works within the pH range of 7.0 to 7.8.
हमारा शरीर 7.0 से 7.8 pH के बीच कार्य करता है।
