11th Class Chemistry Environmental Chemistry

  • question_answer 28)   The gaseous envelope around the earth is known as atmosphere. The lowest layer of this is extended upto 10 km from sea level, this layer is :           (a) stratosphere                               (b) troposphere                               (c) mesosphere                                (d) hydrosphere


      (b) The atmosphere is divided into four major regions: (i) Troposphere (ii) Stratosphere (iii) Mesosphere and (iv) Thermosphere. Troposphere is the lowest region of the atmosphere.

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