My Cart
Your Cart 0

    Your cart is empty.

  • Total (Amount) ₹0.00
NCERT Exemplar · Class 6 · Science

Chapter 15: Air Around Us

Practice each question, then open the answer or worked solution.

Read chapter PDFDownload PDF

Short Answer Questions

4 questions
Q13Written answer

A list of words is given in a box. Use appropriate words to fill up the blanks in the following statements.

Air, oxygen, wind, water vapour, mixture, combination, direction, road, bottles, cylinders. 

(a) The ______ makes the windmill rotate. 

(b) Air is a ______ of some gases. 

(c) A weather cock shows the ______ in which the air is moving at that place. 

Show solutionHide solution
Worked solution

Ans: Wind


Ans: Mixture


Ans: Direction


(d) Mountaineers carry oxygen ______ with them, while climbing high mountains. 

 Ans: Cylinders


Q14Written answer

Observe the picture given in Fig. $15.1$ carefully and answer the following questions.  



(a) What is covering the nose and mouth of the police man?

(b) Why is he putting a cover on his nose? 

(c) Can you comment on air quality of the place shown in the Fig. $15.1$ ?

Show solutionHide solution
Worked solution

Ans: A mask is covering his nose and mouth.


Ans: The mask is protecting him from dirt, pollution and exhaust of vehicles which are harmful elements. If these enter his body, he can suffer from respiratory disorders. 


Ans: The exhaust from vehicles is polluting the environment and deteriorating the air quality making it difficult to breathe clean air.


Q15Written answer

Garima observed that when she left her tightly capped bottle full of water in the open sunlight, tiny bubbles were formed all around inside the bottle. Help Garima to know why it so happened? 

Show solutionHide solution
Worked solution

Ans: We know that air is present in water in the form of oxygen. Due to heating from the sunlight, the air that was dissolved in water started escaping. This escape of air resulted in tiny bubbles formed all around inside the water filled bottle.


Q16Written answer

Match the items of Column I with the items of Column II.


COLUMN I

COLUMN II

  1. Weather cock

  1. gases are fine dust particles

  1. Mountaineers 

  1. sailing yacht

  1. Fine hair inside the nose

  1. oxygen cylinders

  1. Smoke

  1. direction of air flow

  1. wind

  1. prevent dust particles


Show solutionHide solution
Worked solution

Ans: The correct match is given below.


COLUMN I

COLUMN II

  1. Weather cock

    iv.    direction of air flow

  1. Mountaineers 

    iii.    oxygen cylinders

  1. Fine hair inside the nose

    v.     prevent dust particles

  1. Smoke

    i.      gases are fine dust particles

  1. wind

    ii.      sailing yacht