Question

The waste - water consisting of domestic sewage, industrial effluents, thermal and radioactive pollutants receive some sort of treatment before mixing into water bodies. This measure to control water pollution is called.
A.4R concept
B.Cooling methods
C.Both A and B
D.None of the above

Answer 1

Hint: To solve this question, we need to first briefly discuss the methods of pollution mentioned in the options. Then on the basis of the information thus obtained, we can derive the solution for this question.

Complete Step-by-Step Answer:
Before we move forward with the solution of the given question, let us first understand some important basic concepts.
1.4R concept
The 4R concept of waste management basically includes 4 key activities, viz. reduce, reuse, recycle and recover
A.Reduce: In order to decrease the waste produce, we must first reduce the usage of resources in the first place. Only the most optimal amount of resources must be used in order to avoid wastage of any usable resources. This can be considered as a sort of a conservation effort which aims at reducing the needs to reduce the waste.
B.Reuse: This aspect of the 4R concept is very important. Before trying to acquire newer resources, we must first analyse if the resources available with us can be used again.
C.Recycle: whatever material can be reused through some form of processing, must go through recycling. Recycling gives a new life to base material and makes it fit to be used in the same capacity as before.
D.Recover: this process involves salvaging any unused or reusable resources so that we do not create more waste.
2.Cooling methods
Cooling methods in water waste management only involve the temperature regulation of the water effluents before they are released in the water bodies. This is done in order to maintain the water temperature of the water body at a constant value. Because otherwise, a constant variation of the temperature is very harmful for the surrounding ecology.
To tackle the current problem at hand, the 4R method proves to be a great solution because it manages, reduces and salvages any and all solutes present in the effluents, making the discarded water less toxic in nature.

Hence, Option A is the correct option

Note: The 4Rs are a simple way of reminding us how we can make a difference. Each step provides us with a different way of considering what we use and how we dispose of waste