Advertisements
Advertisements
प्रश्न
What is the effect of impurities present in the water on the melting point and boiling point of water?
Advertisements
उत्तर
The boiling point of water increases due to the presence of dissolved impurities.
The freezing point of water decreases due to the presence of dissolved impurities.
APPEARS IN
संबंधित प्रश्न
Name the four main sources of water.
Give a balanced equation for the following conversion:
Potassium oxide to a strong alkali.
Explain why oil spills have an adverse effect on marine life.
Give a reason for the following:
A crusty ‘boiler scale’ is formed in boilers, when hard water is used.
True or false? Correct the wrong statement.
We get rainwater throughout the year.
Water levels in rivers increase greatly during ______.
Which of the following does not show water shortage?
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 |
Water in our tap comes from a ______.
Write any two activities which require more than a bucket of water.
