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About what share of the earth's surface is covered with water?

A90 per cent
B71 per cent
C50 per cent
D25 per cent
Answer & Solution
Correct answer: B. 71 per cent
1. Earth appears blue from space. 2. About 71 per cent is water. 3. Most of it is not fit for direct use. _Source: syllabus Science, Chapter 16, Water: A Precious Resource._
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