Q3 of 20 Page 89

What is not true about air?

Air play an important role in water cycle. It helps the water vapour to rise up and also help in the formation of cloud.

More from this chapter

All 20 →
1

Which of the following statements is incorrect?

 2

Wind does not help in the movement of which of the following?

 4

Mountaineers carry oxygen cylinders with them because

 5

Boojho took an empty plastic bottle, turned it upside down and dipped its open mouth into a bucket filled with water. He then tilted the bottle slightly and made the following observations.

(i) Bubbles of air came out from the bottle.


(ii) Some water entered the bottle.


(iii) Nitrogen gas came out in the form of bubbles and oxygen got dissolved in water.


(iv) No bubbles formed, only water entered the bottle. Which observations is/are correct?