Advertisements
Advertisements
प्रश्न
Paheli kept some water in a beaker for heating. She observed that tiny bubbles appeared before the water started to boil. She boiled the water for about 5 minutes and filled it in a bottle up to the brim and kept the bottle air tight till it cooled down to room temperature.
Why did the tiny bubbles appeared?
उत्तर
The tiny bubbles appeared when the water started boiling because of the air dissolved in water. When she started boiling the water, the air that was dissolved in the water escaped in the form of bubbles.
APPEARS IN
संबंधित प्रश्न
Give two uses of the following component present in air:
oxygen
Define the following:
Respiration
Write ‘true’ or ‘false for the following;
Air is a compound.
Tick (√) the correct alternative from the choice given for the following statement.
The gases which cause acid rain are
Tick (√) the correct alternative from the choice given for the following statement.
Photosynthesis is a process in which plants
Describe a simple experiment with the help of a diagram to show that Air occupies space
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
Air is a mixture and not a compound since the components of air cannot be separated by physical methods.
The capacity of air to hold moisture depends upon the ______ of the air.
With whom should I pair up?
| Group A | Group B | ||
| 1 | Air | a | Excretion |
| 2 | Water | b | Scattering of light |
| 3 | Soil | c | Plasticity |
Do sailors need the help of wind to sail?
