Question

Rain is called acid-rain when its pH is below (a) 7 (b) 6.5 (c) 6 (d) 5.6

Answer 1

when it's pH below (d)5.6

Answer 2

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$<b><u>Answer</u></b>$

Rain is called as acid-rain when its pH is less $<b>(d) 5.6.</b>$

$<b><u>Step-by-step explanation</u></b>$

The normal rain's pH is 5.6. This is because it reacts with carbon dioxide $(CO_{2})$ in the atmosphere and forms mildly acidic carbonic acid before it turns into rain.

$<b><u><font size="5">Thus, the pH of acid rain is below 5.6.</font></u></b>$

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