Biodegradable Waste

Q.

If all the waste we generate is biodegradable, will this have no impact on the environment?

Q.

Name two waste materials which can be recycled.

Q.

Which of the following are biodegradable and which non-biodegradable? Glass bottle, Paper, Ballpoint pen refill, Hay, DDT, Wheat, Cake, Wood, Polythene bag, Jute bag, Cotton cloth, Grass, Vegetable peels

Q. Which of the following groups contain only biodegradable items?
1. Glass, flowers and leather
2. Grass, wood and plastic
3. Fruit-peels, cake and lime-juice
4. Cake, wood and grass

Q.

(a) What is meant by non-biodegradable waste materials? Give two examples of non-biodegradable wastes.

(b) Which of the following materials are biodegradable? Animal bones, Iron nails, Plastic mugs, Leather belts, Silver foil.

Q.

(a) What is meant by biodegradable waste materials? Give two examples of biodegradable wastes.

(b) Which of the following materials are non-biodegradable? Aluminium wire, Tea leaves, Synthetic fibre, Wool

Q.

(a) Describe an activity to show that while the paper is biodegradable but plastic (say, polythene) is non-biodegradable.

(b) Explain why some materials are biodegradable but some are non-biodegradable.

Q.

Question 2
Give any two ways in which biodegradable substances would affect the environment.

Q.

How does a biodegradable waste differ from a non-biodegradable waste? Give two examples of non-biodegradable wastes which pollute our environment.

Q. Heap of garbage found in some site used for the disposal of waste materials by burial is called ___.

1. Landfills
2. Compost
3. Manure
4. None

Q.

Perform an activity to differentiate the biodegradable substances from non-biodegradable ones.

Q.

Which of the following cannot be added in a composting pit to prepare compost?

(a) sunflower (b) fruit and vegetable peels

(c) flowers of plastic (d) red worms

Q.

The pollutants that cannot be broken down to simple and harmless products and called __________.

Q.

Which of the following is not a non-biodegradable material?

(a) nylon socks

(b) plastic school bag

(c) jute carry bag

(d) polyester clothes

Q.

Name a few biodegradable and non-biodegradable pollutants.

Q.

(a) Collect pieces of different kinds of paper. Find out which of these can be recycled.

(b) With the help of a lens look at the pieces of paper you collected for the above question. Do you see any difference in the material of a recycled paper and a new sheet of paper?

Q.

The current era is called the ‘Plastic age. Justify the statement.

Q. For the composting to be efficient, what should be the nature of the organic content being used?

1. Completely synthetic

2. Product with carbon as major constituent

3. Partially synthetic

4. Synthetic polymer

Q. Nylon-2-nylon-6 is a

1. Biodegradable polymer
2. Copolymer
3. Polyamide
4. Non-biodegradable polymer

Q.

Which of the following is a property of most plastics such as PET and Teflon?

1. Biodegradable

2. Non - combustible

3. Edible

4. Non- Biodegradable

Q. What is difference between biodegradable, and non-biodegradable waste?

Q. Distinguish degradable pollutants from non-degradable pollutants.

Q.

Use of bioresources by multinational companies and organizations without authorization from the concerned country and its people is called?

1. Biodegradation

2. Biopiracy

3. Bio-infringement

4. Bio Exploitation

Q.

What is a non-biodegradable substance?

Q. Biodegradable wastes should be separated and kept in .............. colour bins for garbage collectors.

1. Blue
2. Green
3. Red
4. White

Q. Consider the following statements:
(a) Wastes are of two types, biodegradable and non-biodegradable.
(b) Biodegradable wastes should be separated and kept in blue colour bins for garbage collectors.
(c) Ozone is formed in stratosphere by action of ultraviolet radiations on oxygen.
Which of the above statements are correct?

1. (a) and (c)
2. (a) and (b)
3. None of the above
4. (b) and (c)

Q.

Give any two ways in which biodegradable substances would affect the environment.

Q. Choose the correct statements with respect to biodegradable and non-biodegradable substances.

1. Biodegradable substances can be broken down into simpler substances by biological processes.
   Non-biodegradable substances cannot be broken down into simpler ones by biological processes.
2. Biodegradable substances cannot be degraded by biological agents.
   Non-biodegradable substances do not pollute the environment.
3. Biodegradable substances cannot be broken down into simpler ones by biological processes.
   Non-biodegradable substances can be broken down into simpler substances by biological processes.
4. Non-biodegradable substances can be broken down into simpler substances by decomposers.
   Biodegradable substances cannot be broken down into simpler substances by decomposers.

Q. What are the substances called that are not broken down by biological processes?

Q. Non-biodegradable wastes are

1. Biological in origin
2. Commonly man made
3. Do not accumulate in nature
4. Degraded by microbes