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Atmosphare

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  1. Assertion (A) : Noctilucent clouds are located in the mesosphere.
    Reason (R) : The mesosphere is also the region of the ionosphere known as the D layer.
    1. If (A) and (R) are true and (R) is the correct explanation of (A)
    2. If (A) and (R) are true but (R) is not the correct explanation of (A)
    3. If (A) is true but (R) is false
    4. If (A) is false but (R) is true
Correct Option: B

NA


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