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प्रश्न
Differentiate between biodegradable and non-biodegradable substances with the help of one example each.
उत्तर
| Biodegradable wastes | Non-biodegradable wastes | ||
| (a) | Waste materials which can be broken down to non-poisonous substances in nature in due course of time by the action of microorganisms such as certain bacteria are called biodegradable wastes. | (a) | Waste materials which cannot be broken down into non-poisonous or harmless substances in nature are called non-biodegradable wastes. |
| (b) | Examples: Cattle dung, wool, paper, compost | (b) | Examples: Plastics, polythene bags, metal articles, glass objects |
संबंधित प्रश्न
After the examinations Rakesh with his friends went on a picnic to a nearby park. All friends carried cooked food packed in plastic bags or plastic cans. After eating the food some friends collected the leftover food and plastic bags etc and planned to dispose them off by burning. Rakesh immediately checked them and suggested to segregate the leftover food and peels of fruits from the plastic materials and respectively dispose them off separately in the green and red dustbins placed in the corner of the park.
(a) In your opinion, is burning plastic an ecofriendly method of waste disposal? Why? State the advantage of method suggested by Rakesh.
(b) How can we contribute in maintaining the parks and roads neat and clean?
Why is Government of India imposing a ban on the use of polythene bags? Suggest two alternatives to these bags and explain how this ban is likely to improve the environment.
How does a biodegradable waste differ from a non-biodegradable waste? Give two examples of non-biodegradable wastes which pollute our environment.
State one advantage of using jute bags over plastic bags for shopping.
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
We should not separate our waste.
Name any five items which are recyclable.
The average person in India produces ______ kg of waste every day.
Expired medicines, used batteries are domestic hazardous waste.
Suggest any four activities in daily life which are eco-friendly.
