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प्रश्न
A fuel when used releases least amount of pollutants in the air.
विकल्प
sulphur dioxide
chlorofluorocarbon
smoke
CNG
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उत्तर
CNG
APPEARS IN
संबंधित प्रश्न
Answer the question put against the following constituents of air :
Oxygen : What is the percentage proportion of oxygen in air ? Why is oxygen called active air.
Answer the question put against the following constituents of air :
Carbon dioxide : “Although carbon dioxide plays no role in respiration, all life would come to an end if there is no carbon dioxide in air.” Support this statement with relevant facts.
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.
Tick (√ ) the most appropriate answer.
Magnesium burns with a dazzling white flame to form magnesium oxide, a powdery mass. The colour of magnesium oxide is :
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 ______.
The balance of oxygen in atmosphere is maintained through photosynthesis in animals and respiration in plants.
Carbon dioxide gas is ______ in nature.
______ is used as a substitute for compressed air in tyres.
Nitrogen is about two times more soluble in water than oxygen.
State whether the following statement is true or false. If false, correct them.
Plants consume oxygen for respiration.
