Tag: recycling

Questions Related to recycling

Most harmful type of environmental pollutants are

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Human organic wastes

  2. Natural nutrients in excess

  3. Waste animal feed

  4. Non-biodegradable chemicals

Show answer
Correct Option: D
Explanation:

One of the side effects of developing civilisation can be observed in the form of presence of non-biodegradable material which cannot be broken down into simple, harmless substance by the action of bacteria. They are lethal to land where they are dumped and last for centuries, burning of them release poisonous gases injurious to human and animals health in various possible ways. Entry of such substances pollute water bodies because of their non-depleting nature they occupy space in water bodies and consumed by animals causing severe health condition and death. Polythene, plastic is some deadly non-biodegradable waste.

Hence, the correct answer is 'Non-biodegradable chemicals'.

This is non biodegradable pollutant

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Sulphur dioxide

  2. Oxides of nitrogen

  3. Lead vapour

  4. Sewage

Show answer
Correct Option: C
Explanation:

The pollutants which cannot be broken down into simpler, harmless substances in nature, are called non-biodegradable pollutants. DDT, plastics, polythene, bags, insecticides, pesticides, mercury, lead, arsenic, metal articles like aluminium cans, synthetic fibres, glass objects, iron products, and silver foils are non-biodegradable pollutants.

So the correct answer is 'Lead vapour'.

Which one of the following statements pertaining to pollutant is correct?

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. DDT is non-biodegradable pollutant.

  2. Excess fluoride in drinking water causes osteoporosis.

  3. Excess cadmium in drinking water may cause black foot disease.

  4. Methyl mercury in water may cause 'itai itai' disease.

Show answer
Correct Option: A
Explanation:

DDT is an organochlorine pollutant used as insecticides and has several environmental impacts. Chemicals in DDT do not degrade easily and remain in the soil for a long time after its application because it cannot be broken down by the action of microorganism and thus persists and is lethal to human and animal life.

A. DDT is a non-biodegradable pollutant.
B. Excess fluoride in drinking water causes teeth mottling.
C. Excess cadmium in drinking water may cause Itai-Itai disease.
D. Methyl mercury in water may cause Minamata disease.
Hence, the correct answer is 'DDT is non-biodegradable pollutant'.

Which is matched for composite waste?

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Waste clothing, waste plastics such as toys

  2. Waste clothing, rocks

  3. Toys, green waste

  4. Toys, bottles, paper

Show answer
Correct Option: A
Explanation:

Composite waste is a heterogeneous mix of trash composed of different types of materials. Composite waste includes waste clothing, Tetra Packs, waste plastics such as toys.

So the correct option is 'Waste clothing, waste plastics such as toys.'

Rules of effective environmental waste management or three R's are:

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Reduce, Return, Recycle

  2. Reduce, Recover, Recycle

  3. Reduce, Reuse, Recycle

  4. Reduce, Remove, Recycle

Show answer
Correct Option: C
Explanation:

The three R's - reduce, reuse and recycle - saves our environment and they all help to cut down on the amount of waste generated in the environment.


So, the correct answer is 'Reduce, Reuse, Recycle'

The 'three Rs' that will help us to conserve natural resources for long term use are

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Recycle, regenerate, reuse

  2. Reduce, regenerate, reuse

  3. Reduce, reuse, redistribute

  4. Reduce, recycle, reuse

Show answer
Correct Option: D
Explanation:

Reduce the consumption of various resources wherever possible. For example- we can reduce the consumption of electricity by switching off lights and other appliances when they are not required. 
Recycle- There are many items which can be recycled again and again. Recycling is another way of reducing the demand for natural resources. For example- by recycling paper, we reduce the demand for wood and thus, help in saving the forest.
Reuse- Many items can be reused, many times. For example, the old newspaper can be used for packing many items. We can use one side printed sheets for our rough work at home/work.