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प्रश्न
n the following groups of materials, which group/groups contain only non-biodegradable materials?
(i) wood, paper, leather
(ii) polythene, detergent, PVC
(iii) plastic, detergent, grass
(iv) plastic, bakelite, DDT
(a) (iii)
(b) (iv)
(c) (i) and (iii)
(d) (ii) and (iv)
उत्तर
(ii) and (iv)
These materials cannot be degraded by micro-organisms and hence are non-biodegradable.
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संबंधित प्रश्न
Differentiate between biodegradable and non-biodegradable substances with the help of one example each.
If all the waste we generate is biodegradable, will this have no impact on the environment?
Fill in the following blank with suitable word :
Plastic is a ...............material whereas paper is a.............material.
How does a biodegradable waste differ from a non-biodegradable waste? Give two examples of non-biodegradable wastes which pollute our environment.
Describe an activity to show that while paper is biodegradable but plastic (say, polythene) is non-biodegradable.
What type of substances are the major pollutants of the environment? Name two such substances
Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as ______.
Which of the following cannot be added in a composting pit to prepare compost?
(a) sunflower plants
(b) fruit and vegetable peels
(c) flowers of plastic
(d) red worms
What is separation of waste?
Expired medicines, used batteries are domestic hazardous waste.
