Page 171 - Volt Elevate The World Around Us Book 4

Flex Your Brain

A. Choose the correct answer.
1. Which dustbin is used for biodegradable waste?

(a) Blue (b) Green (c) Yellow (d) Black
2. Which of the following is an example of repurposing?
(a) Donating old clothes
(b) Using old tyres as swings

(c) Making paper bags from newspaper
(d) Collecting e-waste in blue bins
3. What is the first step in paper recycling?

(a) Bleaching (b) Pressing and drying
(c) Sorting (d) Collection
4. Recycling one tonne of paper can save about how many trees?

(a) 5 (b) 10 (c) 17 (d) 20

B. Write True or False. Also rectify the incorrect statements.
1. Recycling of paper consumes more energy than making
new paper. ____________
2. Biodegradable waste can be converted into manure. ____________

3. Refuse means avoiding unnecessary items that create waste. ____________
4. Non-biodegradable waste decomposes quickly in the soil. ____________

C. Match the following columns.
Column A Column B

1. Green dustbin (a) Non-biodegradable waste
2. Blue dustbin (b) Sanitary waste
3. Yellow dustbin (c) Biodegradable waste
4. Black/Red dustbin (d) Making new use of old materials

5. Repurpose (e) Hazardous waste

D. Answer the following questions.
1. What is waste management and why is it important?
2. Differentiate between biodegradable and non-biodegradable waste with
examples.
3. Explain the 5 R’s of waste management with one example each.

4. Write the steps involved in the recycling of paper.
5. Mention three advantages of recycling paper.

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