Tag: recycling

Questions Related to recycling

Which of the following materials are non-biodegradable?

  1. Plastic mugs

  2. Egg shell

  3. Leather belt

  4. Both A and C


Correct Option: A
Explanation:

Egg shell and leather belt are obtained naturally from living organisms and are made of biodegradable components.

Plastic mugs are synthesized by humans in factors by making artificial polymers using chemicals which ultimately becomes non biodegradable. It remains as it is for thousands of years in the same condition.
Thus, the correct answer is 'Plastic mugs.'

Identify the inorganic impurity

  1. Urine

  2. Human faeces

  3. Phospahates

  4. Pesticides


Correct Option: C
Explanation:

Urine, Human feces and pesticides consist or compounds made up of carbon and other organic constituents and accumulate as organic waste. While phosphates are the compounds considered as inorganic and they are the inorganic impurity in nature. 

Thus, the correct answer is 'Phosphates'.

Find incorrect statement for Non-biodegradable pollutants:

  1. The non-biodegradable pollutants are decomposed by microbes

  2. They are degraded slowly

  3. They are often harmful

  4. DDT, BHC, plastics, broken glass are examples of non-biodegradable pollutants


Correct Option: A
Explanation:

Non-biodegradable wastes are those that cannot be decomposed or dissolved by microbes or any natural agents. They remain on earth for thousands of years without any degradation.

So, the correct answer is 'the non-biodegradable pollutants are  decomposed by microbes

Acid deposited in rain and snow is known as

  1. Wet Deposition

  2. Dry Deposition

  3. Acid Rain

  4. Rain Depolarization


Correct Option: A

'volatile solids' represents

  1. Dissolved solids

  2. Organic Solids

  3. Colloidal Solids

  4. Suspended Solids


Correct Option: B

DDT is a _____________ pollutant

  1. Bio degradable

  2. Non bio degradable

  3. Un-biodegradable

  4. Naturally degradable


Correct Option: B

Most harmful environmental pollutants are 

  1. Biodegradable

  2. Corrosive agents

  3. Non-biodegradable chemicals

  4. Toxic chemicals


Correct Option: C
Explanation:

Waste that cannot be broken down by other living organisms is called as non-biodegradable. Non-biodegradable substances affect the environment. They may enter the food chain and harm the organisms in the higher trophic levels (by biomagnification), e.g., pesticides, like DDT, non-biodegradable substances like radioactive wastes, lead, mercury etc., affect the health of all living organisms. 

Waste are of two types, biodegradable and non-biodegradable.

  1. True

  2. False


Correct Option: A
Explanation:

Wastes are of two types biodegradable and non-biodegradable. Biodegradable waste is an organic matter which can be broken down into simple organic molecules by micro-organisms using composting or digestion. Biodegradable products include paper, clothes, fruit, cardboard, vegetables.

Non-biodegradable waste is a type of waste that cannot be broken down into its base compounds by micro-organisms in a reasonable amount of time. Non-biodegradable products include plastic, metal, construction waste and electronics. 
Thus, the correct answer is option A.

Which of the following is non-biodegradable?

  1. Tea leaves

  2. Nylon

  3. Remains of animals

  4. Fleece of sheep


Correct Option: B
Explanation:

The correct answer is 'nylon'

Nylon is a synthetic polymer that is known for its resistance to biological degradation and is thus non-biodegradable. Tea leaves remain of animals and fleece of sheep are all natural things on which the enzymes of the microbes can be functional and thus can be degraded by them.

 Which of the following is a biodegradable organic substance?

  1. Plastics

  2. Oils

  3. Pesticide

  4. Garbage


Correct Option: D
Explanation:

The term biodegradable is used to describe materials that decompose through the actions of bacteria, fungi, and other living organisms. Organic substances are carbon containing substances. Thus, garbage can be biodegradable organic substance.