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प्रश्न
Give reason:
When water is heated, we see bubbles rising up.
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उत्तर
These bubbles come from the air dissolved in water. The marine life uses air dissolved in water.
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संबंधित प्रश्न
Write ‘True’ or ‘False’ in front of following statement.
The area where a lot of fuel burns has more percentage of carbon dioxide.
Statement given below is incorrect. Write the correct statement :
Potassium nitrate on strong heating decomposes into potassium nitrite and nitrogen gas.
Name the following:
The type of bacteria which directly absorb nitrogen from the air and converted soluble nitrates in the soil.
Tabulate the various components of air, including the components with variable composition.
What is the source of carbon dioxide in air?
Air is made up of oxygen only.
Aerated water contains
Write a note on nitrogen.
When cooled to -57°C, gaseous carbon-di-oxide becomes a liquid.
State whether the following statement is true or false. If false, correct them.
Plants produce oxygen during the process of making their own food.
