Q.

Consider the following statements: 1. Nearly 99 percent of the total mass of the atmosphere lies within 30 km of the Earth's surface. 2. The proportion of ozone in the atmosphere increases to a maximum at about 60 km from Earth's surface. Which of the statements given above is/are correct? [IAS 2008]

A. 1only
B. 2 only
C. Both 1 and 2
D. Neither 1 nor 2
Answer» A. 1only
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