Advertisements
Advertisements
प्रश्न
What are the two necessary conditions for rusting of iron?
Advertisements
उत्तर
Conditions for rusting:
- Presence of moisture (water).
- Presence of oxygen (air).
APPEARS IN
संबंधित प्रश्न
What are the causes of air pollution?
What is nitrogen-fixation?
What do you observe when Calcium is heated and then tested with moist blue and red litmus – paper?
Describe a simple experiment to show that l/5th of air is oxygen.
Tick (√) the most appropriate answer.
Which is not a polluting gas for the air?
Define the following:
Combustion.
Name the following:
The main, rare (inert) gas present in air.
______ is the active component of air.
The solid form of CO2 is called dry ice which undergoes condensation.
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.
A weather cock shows the ______ in which the air is moving at that place.
