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Question 1

What is referred to as industrial effluent?

Answer 1

Industrial waste water

Industrial effluent is usually treated and disposed of.

Question 2

What are the two types of waste water from residential sources?

Answer 2

Grey water and black water

Grey water includes waste water from bathing and washing, while black water includes waste water from toilets.

Question 3

What is municipal waste water?

Answer 3

Waste water from homes, offices, and sewage systems

This applies only to urban areas, as most villages do not have a sewage system.

Question 4

What is the difference between the terms ‘waste water’ and ‘sewage’?

Answer 4

They are often used interchangeably

Strictly speaking, sewage refers specifically to waste water carried by sewers.

Question 5

What are the three major sources of waste water?

Answer 5

Domestic, industrial, and agricultural sources

These sources contribute significantly to overall waste water generation.

Question 6

What is a major environmental concern regarding waste generation?

Answer 6

A large part of the waste is nonbiodegradable

This waste cannot be broken down by natural decomposers.

Question 7

True or False: Nature efficiently manages waste generated by organisms.

Answer 7

True

Nature uses trees and soil organisms to recycle waste and keep the environment clean.

Question 8

Fill in the blank: The waste water from kitchens is often referred to as _______.

Answer 8

Grey water

Question 9

Fill in the blank: The waste water carried by sewers is commonly known as _______.

Answer 9

Sewage

Question 10

What is a key reason for the importance of waste management?

Answer 10

Growing human population generating excessive waste

Nature’s agents cannot handle the increasing volume of waste produced.

Question 11

What does the term ‘decomposing vegetable matter’ refer to?

Answer 11

Organic waste that can break down naturally

This is part of the waste that nature can manage effectively.

Question 12

What are some pollutants commonly found in industrial waste water?

Answer 12

Chemicals, pesticides, paints, and disease-causing microorganisms

These contaminants can have severe impacts on the environment.

Question 13

What is the role of aquatic organisms in waste management?

Answer 13

They recycle waste and keep water clean

This natural process helps maintain ecosystem balance.