Advertisements
Advertisements
Question
Tick (√) the correct alternative from the choice given for the following statement.
Rust is
Options
hydrated iron oxide
hydrated copper sulphate
anhydrous iron oxide
none of the above
Advertisements
Solution
hydrated iron oxide
APPEARS IN
RELATED QUESTIONS
What was the ancient belief regarding the nature of matter ?
Mention the contribution of the following scientists :
- Antoine Lavoisier
- Robert Boyle
- Joseph Priestley
- Sir W. Ramsay
Match the statements in Column A, with those in Column B.
| Column A | Column B |
| 1. Largest Constituent of air, which dilutes the activity of oxygen. |
(a) Oxygen |
| 2. A gas used for filling weather observation balloons. | (b) carbon acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphur acid |
| 4. An acid formed by the dissolution of carbon dioxide in water. | (d) Helium |
| 5. A gas vital for respiration. | (e) Nitrogen |
How is air useful to scooters and cars.?
Name two air pollutants which affect our health.
Describe a simple experiment with the help of a diagram to show that Air occupies space
What will happen if the number of vehicles and factories in your surroundings increases?
While freezing, the ______ of water is lowered.
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% |
State whether the following statement is true or false. If false, correct them.
Air does not occupy any space.
