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प्रश्न
Define the following:
Combustion.
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उत्तर
Combustion: Combustion also called burning “is burning of substance in the oxygen of air completely producing heat and light is called combustion.”
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संबंधित प्रश्न
Complete and balance the following chemical equation.
CaO + H2O → ____________
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
_______ gas is used for filling weather observation balloons.
Fill in the blank
The supporter of combustion in air is _____.
The diagrams below represents an experiment to show the presence of a component of air.
- State why air is sucked from – outlet ‘B’ and not from outlet “A”
- State why the air is sucked ‘slowly’ from the outlet “B”
- State the observation seen after completion of the experiment.
- State the reason for the above observation seen.
- Name another component which if present in air as a pollutant would have given a similar observation
Name the main component of air.
What is the source of oxygen gas in air?
Air is made up of oxygen only.
Which of the following is true about oxygen?
______ is the main component of air.
State whether the following statement is true or false. If false, correct them.
Plants produce oxygen during the process of making their own food.
