Biodegradable and Non Biodegradable Waste

Q. Blends of polyblend and bitumen, when used, help to increase road life by a factor of three. What is the reason?

Q. Which one of the following is not used for disinfection of drinking water?

1. Chloramine
2. Phenyl
3. Ozone
4. Chlorine

Q.

Which of the following material takes the longest time for biodegradation?

1. Cotton

2. Paper

3. Bone

4. Jute

Q.

Differentiate between biodegradable and non-biodegradable waste.

Q. A biodegradable plastic can be obtained from

1. Pseudomonas species
2. Ochrobacterum species
3. Rhodococcus equi
4. All of the above

Q.

How does the presence of acids/alkalies affect the process of self purification of water in rivers?

Q.

Which of the following substances is non-biodegradable?

1. Paper

2. Radioactive substances

3. Biofertilisers

4. Glass

Q. What do biodegradable materials mean?

1. Only acids can act on them to degrade them
2. All of the above
3. Only heat can act on these materials to degrade them
4. Microorganisms can act on them to degrade them

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

Q. What do biodegradable materials mean?

1. Only heat can act on these materials to degrade them
2. Only acids can act on them to degrade them
3. Microorganisms can act on them to degrade them
4. All of the above

Q.

Distinguish between biodegradable and non-biodegradable wastes.