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प्रश्न
Air is made up of oxygen only.
विकल्प
True
False
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उत्तर
Air is made up of oxygen only- False.
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संबंधित प्रश्न
What do you observe when Calcium is heated and then tested with moist blue and red litmus – paper?
State three uses of water vapour in the air.
Briefly state the importance of Carbon dioxide.
Write fully balanced equation for the following :
CO2 + H2O →
Complete the statement given below by filling in the blank with the correct word from the words given:
The component of air used in photosynthesis is ______ and the products of photosynthesis is oxygen.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
The mesosphere in the atmosphere, contains most of the air, fit for respiration
Of the total volume of air – 4/5th is nitrogen. State the utility or consequence of this ratio.
Why is carbon-dioxide gas used to extinguish fire?
Why do we see the sky and air clear and clean after rainfall?
Nitrogen is _______ than air.
