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प्रश्न
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.
Air is a ______ of some gases.
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उत्तर
Air is a mixture of some gases.
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संबंधित प्रश्न
Give two uses of the following component present in air:
carbon dioxide
Name two air pollutants which cause acid rain.
Fill in the blank
Polluted air is harmful to ____.
Describe a simple experiment with the help of a diagram to show that Air occupies space
A mixture has a variable composition. Give three other reasons why air is considered a mixture and not a compound.
Name the following.
Gases that are harmful to the ozone layer
Fill in the blank:
Rusting is a chemical reaction which involves _____ oxidation.
Name a device which uses wind energy to generate electricity.
Take a squeezable bottle. Make a hole on the lid and close the bottle tightly. Bring the bottle near your face and press the bottle. What do you feel?
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.
