World Geography
The strongest bonds exist between the particles found within

sedimentary rock
all have similar strength of bonds
igneous rocks
metamorphic rocks

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

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

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World Geography
Which among the following statements is/are correct about the stratosphere?The Stratosphere is the layer of the Earth’s atmosphere which lies beyond the mesosphere.It extends up to an altitude of 50 kilometres from the earth’s surface.This layer is ideal for flying aeroplaneSelect the correct code from the options given below:

1, 2 & 3
Only 1
Only 2 & 3
Only 1 & 2

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