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प्रश्न
Fill in the blank
Air is a ______ of gases
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उत्तर
Air is a mixture of gases
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संबंधित प्रश्न
Write the chemical name of Lime water
How is air useful to agriculture?
What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.
Describe a simple experiment with the help of a diagram to show that Air exerts pressure
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
Air is a mixture and not a compound since the components of air cannot be separated by physical methods.
Name the following.
Inert gases in the air
Fill in the blank:
A candle burns in a jar of oxygen, but gets extinguished in ______
Complete the statement given below by filling in the blank with the correct word/s from the word/s given below
____________ is an example of a pollutant present in the air.
Match the items of Column I with the items of Column II
| Column I | Column II | ||
| (a) | Weather cock | (i) | Gases and fine dust particles |
| (b) | Mountaineers | (ii) | Sailing yacht |
| (c) | Fine hair inside the nose | (iii) | Oxygen cylinders |
| (d) | Smoke | (iv) | Direction of air flow |
| (e) | Wind | (v) | Prevent dust particles |
Paheli kept some water in a beaker for heating. She observed that tiny bubbles appeared before the water started to boil. She boiled the water for about 5 minutes and filled it in a bottle up to the brim and kept the bottle air tight till it cooled down to room temperature.
Do you think tiny bubbles will appear on heating the water taken out from the bottle? Justify your answer.
