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Explain why mountaineers carry oxygen cylinders with them?
As you go up, above the sea-level the atmospheric pressure goes on decreasing and the amount of oxygen also decreases at higher altitude.
How do plants and animals help each other in exchange of gases in the atmosphere?
Animals and plants use oxygen during respiration and release carbon dioxide gas in air. But green plants also release oxygen gas by taking CO2 during photosynth
List five activities that are possible due to presence of air.
The activities that are possible due to the presence of air, are: (a) To make a simple firki (b) To make a weather cock (c) To breathe for survival (d) For burn
How will you show that air is dissolved in water?
Take some water in a glass vessel or beaker. Heat it slowly on a tripod stand. Before the water begins to boil, look carefully at the inner surface of the vesse
Through a pie diagram, mention various components of air and their percentage.
Image
Name the instrument shown. What is its use?
Weather cock, to find the direction of wind
Write one function of windmill.
To produce electricity.
How will you prove that soil particles have air in between?
Take a glass tumbler and add some soil in it. Then pour some water on the soil slowly and stir for a while. The air bubbles start coming out of the soil. This p
Give one word: 1. Air in motion, 2. Most abundant gas in the air, 3.
Wind, Nitrogen
Choose the incorrect statement. A. Air has weight. B. Air occupies space. C. Air is dissolved in water. D. Carbon dioxide makes 21% of air.
D. Carbon dioxide makes 21% of air.
Which gas helps in burning of a matchstick?
Oxygen
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