Question
Which of the following contributes to acid
rain?Solution
SO₂ and NOx combine with water to form acid rain.
The number of students in class 'A' is 128, and the ratio of the number of girls to boys is 5:11. If the average number of boys in classes A and B is 14...
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The average number of books on history, polity and geography in a library is 150, and the average number of books on history and geography is 140. If th...
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