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प्रश्न
The composition of air is always exactly the same.
विकल्प
True
False
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उत्तर
The composition of air is always exactly the same- False.
Correct statement
The composition of air changes slightly place to place.
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संबंधित प्रश्न
What do you observe when Carbon dioxide gas is passed through lime water.
Name two important processes supported by oxygen present in air.
Give two uses of the following component present in air:
oxygen
Tick (√) the correct alternative from the choice given for the following statement.
Respiration
What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
Air is a mixture and not a compound since the components of air cannot be separated by physical methods.
What will happen if the number of vehicles and factories in your surroundings increases?
Why is it said that-
Air is a homogeneous mixture of various gases.
Draw a neat labelled diagram for the following experiment.
To prepare oxygen in the laboratory from hydrogen peroxide and a catalyst.
About 78% of the volume of air is ______.
