Advertisements
Advertisements
प्रश्न
How is air useful to water boats?
Advertisements
उत्तर
Air helps the movement of water boats.
APPEARS IN
संबंधित प्रश्न
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 |
Write the chemical name of Lime water
Give two uses of the following component present in air:
water vapour
Tick (√) the correct alternative from the choice given for the following statement.
Fuels which do not leave any residue on burning are
Answer in your own words.
What are the various constituents of air? Write their uses.
The capacity of air to hold moisture depends upon the ______ of the air.
State the meaning of the term atmosphere.
Draw a neat labelled diagram for the following experiment.
To demonstrate the burning of sulphur in a jar of oxygen.
In a number of musical instruments, air plays an important role. Can you name some such instruments?
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.
The ______ makes the windmill rotate.
