Advertisements
Advertisements
प्रश्न
Give the chemical name of rust.
Advertisements
उत्तर
The chemical name of rust is hydrated iron oxide [Fe2OrxH2O]
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 blanks :
_______ and ______ are the most common air pollutants.
Give two examples of modern fuels.
Explain the importance of nitrogen of the air for plant growth.
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 ______.
What happens if the percentage of carbon-dioxide increases in the air?
Write the percentage of the gases present in air.
How do astronauts breathe when they go beyond the earth’s atmosphere?
______ gas is essential for the proper growth of all plants.
