Consider the following statements:

i) The chemical composition of the atmosphere up to an altitude of 90km is uniform with respect to nitrogen and oxygen.
ii) The chemical composition of the atmosphere beyond 90km proportionally changes with the increase in proportion of lighter gases.
Which of the above statements are true?

a) i, only

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b) ii, only

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c) Both i and ii

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d) None of the above

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Solution

The correct option is C c) Both i and ii

c)
Explanation: The homogeneity in the composition has named this layer upto 90km of atmosphere as homosphere.
Above 90km it is called heterosphere due to its changing composition.

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The correct option is C c) Both i and ii c) Explanation: The homogeneity in the composition has named this layer upto 90km of atmosphere as homosphere. Above 90km it is called heterosphere due to its changing composition.

The correct option is C c) Both i and ii

c)
Explanation: The homogeneity in the composition has named this layer upto 90km of atmosphere as homosphere.
Above 90km it is called heterosphere due to its changing composition.