Biodegradable Waste

Q. Mark the odd one.

1. Fruit peel
2. Aluminium foil
3. Waste leather
4. Wood

Q.

Question 24
What are the advantages of cloth bags over plastic bags during shopping?

Q.

If you dump kitchen waste in a pit, it may, after sometime.

1. Convert into compost.

2. Convert into vermicomposting.

3. Remain as such

4. Remain forever in its dried form

Q.

Identify biodegradable waste from the following :

peal of vegetable less and fruits, metalic cans, broken plastic toys, broken glass cover grass, paper, ball point pen refill.

Q.

Species of fungi that have an ability to decompose rubber from garbage

1. Streptomyces

2. Nocardia

3. Aspergillus

4. Actinomycetes

Q.

What are the products of green chemistry?

Q. Organisms responsible for biodegradation play a role of decomposers in an ecosystem.

1. True
2. False

Q.

Non-biodegradable means it cannot be broken down by natural decomposers.

1. True
2. False

Q.

Assertion: Plastic bags are not turned into harmless substances in soil and water.

Reason: Soil microflora lack bio-catalysts for rendering plastics harmless.

1. A is true and R is false

2. Both A and R are true

3. A is false, R is true

4. Both A and R are false

Q. In which of the following groups, all three are biodegradable substances?

1. Waste leather, wood, spoiled food
2. Aluminium foils,  insecticides,  radioactive waste
3. Kitchen waste, plastic, polythene bag
4. Glass object, leaves, wood

Q. What strategies can be adopted for recycling waste products?

Q. Which of the following is/are correct matches w.r.t. differences between biodegradable and nonbiodegradable substances?

1. Biodegradable substances can be recycled, whereas non-biodegradable substances cannot.
2. By the action of microbes, biodegradable substances can be broken down but nonbiodegradable substances cannot.
3. Organic and inorganic matters are composition of biodegradable and nonbiodegradable substances respectively.
4. All of the above.

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.

Best way to dispose e-waste is

1. burning

2. shredding

3. recycling

4. dumping in soil pits.

Q.

Select the group of different substances that make soil rich in nutrients.

1. Polythene bags, crockery items and soft drink cans.

2. Kitchen waste, leaves and fruit peels.

3. Urea, DDT and compost.

4. Wrappers of chips, waste CDs and unused batteries.

Q. Match the following 4R principles with their meaning.

1. Minimum use
2. Use again
3. Process and use
4. Reclaim

Q. A substance which is not present in nature, but added to the atmosphere due to human activity and causes an adverse effect on the environment is called:

1. pollutant
2. contaminant
3. sink
4. receptor

Q. Which of the following statement is suitable for biogeochemical cycles?

1. It describes the mode of adaptation of organisms based on environmental changes.
2. It depends on the biotic changes which may destroy the unstable ecosystems.
3. It explains how energy moves through trophic levels of an ecosystem.
4. It explains the movement and recycling of different elements and compounds through the environment.

Q. Biodegradation is carried out by bacteria and some fungi.

1. False
2. True

Q. As an individual, what can we do to generate the least garbage? Give two points.

Q. Organic wastes of polluted water can be converted into gases by the help of microorganisms. It can be done by___.

1. 
   Sewage Treatment Plant
2. 
   Land filling
3. 
   Incineration

Q. Every household produces a lot of material A daily. In one of the methods of disposal B, material A is burned at a very high temperature of about ${1000}^{\circ }C$ in a structure called C. During this process, the organic matter present is removed as D and E whereas F is left behind (which can be dumped in a landfill site).

(b) Name the method of disposal B