Acid rain is rainfall and other forms of precipitation with a pH less than 6.0 pH of normal rain is 6−6.5. It is caused by the large scale emission of acidic gases into the atmosphere from thermal power plants, industries and automobiles.
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Q1
Rain is called acid-rain when is pH is below
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Q2
Rain is called acid rain when its pH is below
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Q3
Given below are two statements:
Statement I: The pH of rain water is normally ≈5.6.
Statement II: If the pH of rain water drops below 5.6, it is called acid rain.
In the light of the above statements, choose the correct answer from the option given below.
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Q4
When pH of rain water is less than 5.6, it is called:
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Q5
What is the threshold below which, if the pH of rain water drops, it is called ‘acid rain’?