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Solutions ⇒ Class 6th ⇒ Science ⇒ 15. AIR AROUND US

Solutions 15. AIR AROUND US - Exempler Problems As Assignment | Class 6 Science - Toppers Study

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Solutions 15. AIR AROUND US - Exempler Problems As Assignment | Class 6 Science - Toppers Study

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Chapter 15 Science class 6

Exempler Problems As Assignment class 6 Science Chapter 15. AIR AROUND US

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15. AIR AROUND US

| Exempler Problems As Assignment |

Solutions 15. AIR AROUND US - Exempler Problems As Assignment | Class 6 Science - Toppers Study


15. AIR AROUND US 


Exempler Problems: 

Multiple Choice Question: 

1. Which of the following statements is incorrect?

(a) All living things require air to breathe.
(b) We can feel air but we cannot see it.
(c) Moving air makes it possible to fly a kite.
(d) Air is present everywhere but not in soil.

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

(a) Firki
(b) Weather cock
(c) Ceiling fan
(d) Sailing yacht

3. What is not true about air?

(a) It makes the windmill rotate.
(b) It helps in the movements of aeroplanes.
(c) Birds can fly due to presence of air.
(d) It has no role in water cycle.

4. Mountaineers carry oxygen cylinders with them because

(a) there is no oxygen on high mountains.
(b) there is deficiency of oxygen on mountains at high altitude.
(c) oxygen is used for cooking.
(d) oxygen keeps them warm at low temperature.

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?

(a) (i) and (ii)                  (b) (iv) only
(c) (iii) and (iv)                (d) (i) only

6. Which of the following components of air is present in the largest amount in the atmosphere?

(a) Nitrogen                          (b) Oxygen
(c) Water vapour                  (d) Carbon dioxide

7. The components of air which are harmful to living beings are:

(a) nitrogen and carbon dioxide.
(b) dust and water vapour.
(c) dust and smoke.
(d) smoke and water vapour.

8. Usha took a lump of dry soil in a glass and added water to it till it was completely immersed. She observed bubbles coming out. The bubbles contain

(a) water vapour                   (b) only oxygen gas
(c) air                                    (d) none of these

9. State whether the following statements are true or false. If false, correct them.

(a) Plants consume oxygen for respiration.
(b) Plants produce oxygen during the process of making their own food.
(c) Air helps in the movements of sailing yachts and glider but plays no role in the flight of birds and aeroplanes.
(d) Air does not occupy any space.

10. In a number of musical instruments, air plays an important role. Can you name some such instruments?

11. In the boxes of Column I the letters of some words got jumbled. Arrange them in proper form in the boxes given in Column II

12. Make sentences using the given set of words.

(a) 99%, oxygen, nitrogen, air, together
(b) Respiration, dissolved, animals, air, aquatic
(c) Air, wind, motion, called

13. 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.
(d) Mountaineers carry oxygen ______ with them, while climbing high mountains.

17. Explain the following observations very briefly

(a) A firki does not rotate in a closed area.
(b) The arrow of weather cock points towards a particular direction at a particular moment.
(c) An empty glass in fact is not empty.
(d) Breathing through mouth may harm you.

18. Write just a few sentences for an imaginary situation if any of the following gases disappear from the atmosphere:

(a) oxygen
(b) nitrogen
(c) carbon dioxide

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Solutions ⇒ Class 6th ⇒ Science
1. FOOD: WHERE DOES IT COME FROM
2. COMPONENTS OF FOOD
3. FIBRE TO FABRIC
4. SORTING MATERIAL INTO GROUPS
5. SEPARATION OF SUBSTANCES
6. CHANGES AROUND US
7. GETTING TO KNOW PLANTS
8. BODY MOVEMENTS
9. THE LIVING ORGANISMS AND THEIR SURROUNDINGS
10. MOTION AND MEASUREMENT OF DISTANCES
11. LIGHT, SHADOWS AND REFLECTIONS
12. ELECTRICITY AND CIRCUITS
13. FUN WITH MAGNETS
14. WATER
15. AIR AROUND US
16. GARBAGE IN, GARBAGE OUT

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