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 two ways in which nitrogen fixation occurs?
Statement given below is incorrect. Write the correct statement :
Carbon dioxide gas allows the earth to radiate out heat rapidly.
Tick (√) the most appropriate answer.
The presence of water vapour in air is essential for :
What do you observe when Ice cold water is filled in a glass tumbler.
Give the chemical name of rust.
Complete the statement given below by filling in the blank with the correct word from the words given:
The component of air which is variable in air above sea level and in air in general ______.
Match the following.
| Nitrogen | Respiration in living animals |
| Oxygen | Fertilizer |
| Carbon dioxide | Refrigerator |
| Dry ice | Fire extinguisher |
“Air is not an elementary substance, but a composition”. Why?
Which of the following components of air is present in the largest amount in the atmosphere?
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.
