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प्रश्न
Fill in the blank
The supporter of combustion in air is _____.
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उत्तर
The supporter of combustion in air is oxygen.
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संबंधित प्रश्न
Fill in the blanks :
_______ and ______ are the most common air pollutants.
A fuel when used releases least amount of pollutants in the air.
Classify Carbon monoxide. Also give a balanced equation to prepare it.
Give reason:
When water is heated, we see bubbles rising up.
Complete the statement given below by filling in the blank with the correct word from the words given:
The product formed which is common to both combustion and respiration is ______.
State four different properties of a compound and a mixture.
______ is the active component of air.
The composition of air changes slightly from place to place. Give examples.
“Air is not an elementary substance, but a composition”. Why?
Boojho took an empty plastic bottle, turned it upside down and dipped its open mouth into a bucket filled with water. He then tilted the bottle slightly and made the following observations.
- Bubbles of air came out from the bottle.
- Some water entered the bottle.
- Nitrogen gas came out in the form of bubbles and oxygen got dissolved in water.
- No bubbles formed, only water entered the bottle.
Which observations is/are correct?
