Advertisements
Advertisements
प्रश्न
Water exists in all three states. Discuss.
Advertisements
उत्तर
In the free state, water occurs in the solid, liquid and gaseous states.
Solid state: A large amount of fresh water is found in the form of snow or ice.
Liquid state: Most of the water present in oceans and found in streams, rivers, lakes, ponds and springs on land is water in the liquid state.
Gaseous state: Water vapour present in the air is in the gaseous state. Water vapour condenses in the sky to form clouds. Mist and fog are also examples of water in the gaseous form.
APPEARS IN
संबंधित प्रश्न
Give reason On opening a bottle of a cold drink, a fizz sound is heard.
What is the smallest particle of water ? Describe it’s structure.
Answer the following question:
Name two gases dissolved in natural water.
How are clouds formed?
Select the correct answer of the following statement:
A drying agent placed in desiccator.
Give a balanced equation for the following conversion:
Magnesium bicarbonate in temporary hard water to magnesium carbonate by boiling.
Differentiate between the following:
Natural water and treated water
In the coastal areas, wind current moves from the sea towards the land during the day; but during the night it moves from land to the sea. Discuss the reason.
Match the items of Column I with the items of Column II with reference to sewage.
| Column I | Column II | ||
| (a) | Inorganic impurities | (i) | phosphorus and nitrogen |
| (b) | Organic impurities | (ii) | nitrates and phosphates |
| (c) | Nutrients | (iii) | cholera and typhoid |
| (d) | Bacteria | (iv) | pesticides and herbicides |
Dissolve two spoons of common salt in half a cup of water. Now if you want to get the salt back, what will you do?
