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प्रश्न
Tick the objects which has air in it.
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तक्ता
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उत्तर
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संबंधित प्रश्न
A wind mill is used to produce
______ is used by plants as nitrates.
Biscuits kept open on a plate during monsoon days lose its’ crispness. Why?
Movement of air is called ______.
Why do plants need nitrogen?
The percentage of oxygen in the exhaled air of respiration is ______.
______ respire using their skin.
______ discovered nitrogen.
Analogy:
Oxygen: Joseph Priestley.
Nitrogen: ______.
Which is used in refrigerating meat and fish?
