Advertisements
Advertisements
प्रश्न
The process of conversion of iron into hydrated form of oxides is called _______.
Advertisements
उत्तर
The process of conversion of iron into hydrated form of oxides is called rusting.
APPEARS IN
संबंधित प्रश्न
Give two uses of the following component present in air:
carbon dioxide
How is air useful to windmills?
What is air pollution?
Tick (√) the correct alternative from the choice given for the following statement.
Photosynthesis is a process in which plants
What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.
A mixture has a variable composition. Give three other reasons why air is considered a mixture and not a compound.
What should be done if the clothes of a person catch fire accidentally? Why?
Match the following:
| 1. | Layer of air | a. | Hand fan |
| 2. | Electrical energy | b. | 21% |
| 3. | Nitrogen | c. | Windmill |
| 4. | Oxygen | d. | Atmosphere |
| 5. | Palm Trees | e. | 78% |
In the boxes of Column, I the letters of some words got jumbled. Arrange them in proper form in the boxes given in Column II
| Column I | Column II | ||
| (a) | \[\boxed{\text{D}}\]\[\boxed{\text{I}}\]\[\boxed{\text{L}}\]\[\boxed{\text{L}}\]\[\boxed{\text{M}}\]\[\boxed{\text{W}}\]\[\boxed{\text{I}}\]\[\boxed{\text{N}}\] | (a) | `squaresquaresquaresquaresquaresquaresquare square` |
| (b) | \[\boxed{\text{Y}}\]\[\boxed{\text{N}}\]\[\boxed{\text{O}}\]\[\boxed{\text{G}}\]\[\boxed{\text{X}}\]\[\boxed{\text{E}}\] | (b) | `squaresquaresquaresquaresquare square` |
| (c) | \[\boxed{\text{M}}\]\[\boxed{\text{E}}\]\[\boxed{\text{S}}\]\[\boxed{\text{K}}\]\[\boxed{\text{O}}\] | (c) | `squaresquaresquaresquaresquare` |
| (d) | \[\boxed{\text{T}}\]\[\boxed{\text{U}}\]\[\boxed{\text{D}}\]\[\boxed{\text{S}}\] | (d) | `squaresquaresquare` |
Explain the following observations very briefly
A firki does not rotate in a closed area.
