question_answer 7)

 Tick the correct answer: (i) Which is the following gases protects us from harmful sun rays? (a) Carbon dioxide (b) Nitrogen     (c) Ozone. (ii) The most important layer of the atmosphere is: (a) Troposphere    (b) Thermosphere <c) Mesosphere. (iii) Which of the following layers of the atmosphere is free from clouds? (a) Temperature    (&) Air pressure (c) Wind direction. (iv) As we go up the layers of the atmosphere, the pressure— (a) Increases       (^Decreases     (c) Remain the same; (v) When precipitation comes down to earth in the liquied form, it is called: (a) Cloud           (b) Rain          (c) Snow.  

Answer:

(i)(c) Ozone, (ii)(b) Trosphere, (iii)(b) Air pressure, (iv) (b) Decreases, (v) (c) Rain.