The pH of the rainwater goes above 7 when it turns acidic.
Acid rain is formed, when pH of rainwater is____.
During acid rains, the pH of rainwater is approximately ___.
(a) What would you expect the pH of the pure water to be?
(b) What colour would the universal indicator show in an aqueous solution of sugar? Why?
(c) A sample of rainwater turned universal indicator paper yellow. What would you expect its pH to be? Is it a strong or a weak acid?
Question 1 (b)
What fraction of a clockwise revolution does the hour hand of a clock turn through, when it goes from 4 to 7