Anita Sood, Anupama Bhandari, Madhabi Bose and, Shelly Wadhwa Solutions for Exercise 4: ASSESSMENT ZONE
Anita Sood Science Solutions for Exercise - Anita Sood, Anupama Bhandari, Madhabi Bose and, Shelly Wadhwa Solutions for Exercise 4: ASSESSMENT ZONE
Attempt the free practice questions from Exercise 4: ASSESSMENT ZONE with hints and solutions to strengthen your understanding. Expanded Universal Science solutions are prepared by Experienced Embibe Experts.
Questions from Anita Sood, Anupama Bhandari, Madhabi Bose and, Shelly Wadhwa Solutions for Exercise 4: ASSESSMENT ZONE with Hints & Solutions
Match the following:
| 1) Carbon dioxide | a. Transparent |
| 2) Coarse particles | b. Addition of potassium permanganate |
| 3) Eutrophication | c. Unwanted growth of weeds in water |
| 4) Potable water |
d. Greenhouse gas |
| 5) Chemical treatment | e. Formed from road dust |
What is water pollution? Discuss four steps to prevent water pollution.
How does hot water act as a pollutant?
Why do we need to filter water for drinking? Explain how water can be purified at home.
Why do lakes turn green? Discuss the cause.
Outline the steps involved in purification of water for Public distribution.
Why is CNG considered to be a better fuel than petrol and diesel?
Complete the crossword with the help of the clues provided.
ACROSS
2. Chemicals used to increase the crop production
5. Substances that cause harm to the environment
DOWN
1. Addition of chlorine to purify water
3. Water which is fit for drinking
4. Best method to kill germs in water domestically.
