Question

B. Fill in the blanks.

1. ______controls the rate of burning

2. ______gas is necessary for respiration.

3. ______gas is used to make carbonated drinks and soda water.

4. ______is used in weather balloons.

5. Water vapour condenses on_______ particles and causes rain.

6. ______are burned to cook food, generate heat and run vehicles.

7. The blanket of air that surrounds the earth is called the______.

8. ______acts as the medium through which sound travels.​

Answer 1

Answer:

1) oxygen

2) oxygen

3) carbon dioxide

4) hydrogen

5) cooling

6) fuel

7) atmosphere

8) air

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Answer 2

1) Oxygen controls the rate of burning.

2) Oxygen gas is necessary for respiration.

3) carbon dioxide gas is used to make carbonated drinks and soda water.

4)Latex or synthetic rubber (neoprene) is used in weather balloons.

5) water vapour condenses on tiny airborne particles and causes rain.

6) sunlight are burned to cook,generate heat and run vehicles.

7) the blanket of air that surrounds the earth is called the atmosphere.

8) mechanical wave acts as the medium through which sound Travels

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