World Geography
The sequence of layers of atmosphere from earth to upwards is

troposphere, tropopause, stratosphere, stratopause, mesosphere, mesopause, ionosphere(thermosphere, thermopause, exosphere)
troposphere, tropopause, stratosphere, thermosphere, exosphere
troposphere, stratosphere, stratopause, mesosphere , ionosphere
troposphere, tropopause, stratosphere, mesosphere , exosphere, thermosphere, thermopause

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World Geography
Which among the following statements is/are correct about Petroleum?Petroleum is an inflammable mixture of oily hydrocarbons.Most of the oil comes from synclines rather than anticlines.Select the correct code from the options given below:

Only 2
Only 1
Neither 1 & 2
Both 1 & 2

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World Geography
The main objective of multi-purpose river projects are

power generation by constructing hydro power stations
All of these
extension of irrigation facilities by constructing dams to store surplus water during the rainy seas
flood controls and making rivers navigable

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