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Rain water is called ‘acid rain' when its :
- (a)pH falls below 7.2.
- (b)pH falls below 14.
- (c)pH is above 7.
- (d)pH falls below 5·6.
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(D) /pH falls below 5.6
Rain water is called ‘acid rain' when its :
CBSE Class 10 Science PYQ · Acids, Bases and Salts · The pH scale and its importance in everyday life · 1 Mark · March 2026 · Standard
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