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Class 4 Science Pollution Que and Ans

Last updated on July 20th, 2023 at 09:34 pm

What is afforestation?

Ans: Afforestation refers to the planting of trees in areas that are barren or have been deforested.

 

What is biodegradable waste?

Ans: Wastes that decompose easily are referred to as biodegradable waste.

 

Name two non-biodegradable waste.

Ans: Plastic and rubber are non-biodegradable wastes.

 

Define environment.

Ans: All living things and non-living things that exist naturally on earth make up the environment.

 

Multiple Choice Questions

Food waste, paper, and wood can be decomposed or rotted easily.
A fruit peel is a ______________ waste.
Infertility of soil can be caused by ……………. Pollution.
………………. trees in large numbers is known as afforestation.
The release of harmful chemicals into rivers or oceans contributes ……………pollution
Forests are being destroyed to build cities, towns, and factories
Rubber is a ………… waste.
Trees stabilize the soil and prevent soil erosion.
……………. pollution can occur as a result of chemicals flowing in rivers.
Among the three R’s of waste management, which one is not one?
When harmful substances are mixed with the soil/air, it causes destruction of earth’s land surfaces. This is known as ……….. pollution
When trees are cut down in large numbers, it is called ………..
Wastes like plastic, polythene, rubber, and glass decompose or rot.
Wastes that are not biodegradable can be easily decomposed.
……………. pollution occurs when chemicals, gases, or particles enter the atmosphere, making it unfit for breathing.
Which of the following means planting large numbers of trees?
MCQ on Pollution for Class 4
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