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Test: Waste Water Story


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15 Questions MCQ Test Science Class 7 | Test: Waste Water Story

Test: Waste Water Story for UPSC 2022 is part of Science Class 7 preparation. The Test: Waste Water Story questions and answers have been prepared according to the UPSC exam syllabus.The Test: Waste Water Story MCQs are made for UPSC 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Waste Water Story below.
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Test: Waste Water Story - Question 1

Liquid waste from houses is called

Detailed Solution for Test: Waste Water Story - Question 1

Sewage is wastewater released by homes, industries, hospitals, offices and other users. It also includes rainwater that has run down the street during a storm or heavy rain. The water that washes off roads and rooftops carries harmful substances with it. Sewage is a liquid waste. Most of it is water, which has dissolved and suspended impurities.

Test: Waste Water Story - Question 2

Biodegradable waste

Detailed Solution for Test: Waste Water Story - Question 2

Biodegradable wastes decompose in nature by action of microbes into simple simpler substances.

Test: Waste Water Story - Question 3

Polythene and plastics

Detailed Solution for Test: Waste Water Story - Question 3

Polythene and plastics are non-biodegradable and very harmful substances.

Test: Waste Water Story - Question 4

Which of the following is non-biodegradable waste?

Detailed Solution for Test: Waste Water Story - Question 4

Vegetable and fruit peels, plants and animal excreta and cotton clothes are biodegradable while plastic is non-biodegradable.

Test: Waste Water Story - Question 5

Which one is not an organic waste?

Detailed Solution for Test: Waste Water Story - Question 5

Vegetable peels, cotton cloths and paper are plant products and organic wastes while DDT is manmade inorganic substance used as pesticides.

Test: Waste Water Story - Question 6

Sanitation in the cities is the function of

Detailed Solution for Test: Waste Water Story - Question 6

Maintenance of health and sanitation, registration of births and deaths, providing primary education are the functions of Municipal Corporation whereas disposal of the civil disputes is not its function.

Test: Waste Water Story - Question 7

The process of waste treatment is called

Detailed Solution for Test: Waste Water Story - Question 7

The process of waste treatment is called as sewage treatment to remove harmful substance from water to make it portable.

Test: Waste Water Story - Question 8

Bacteria that decompose organic wastes are called

Detailed Solution for Test: Waste Water Story - Question 8

Correct Answer :- c

Explanation : The bacteria that decompose organic wastes are called anaerobic bacteria.

Anaerobic digestion is a sequence of processes by which microorganisms break down biodegradable material in the absence of oxygen. The process is used for industrial or domestic purposes to manage waste or to produce fuels. Much of the fermentation used industrially to produce food and drink products, as well as home fermentation, uses anaerobic digestion.

Test: Waste Water Story - Question 9

Biodegradable wastes are generally

Detailed Solution for Test: Waste Water Story - Question 9

Biodegradable wastes are generally organic in nature obtained from plant and animals.

Test: Waste Water Story - Question 10

A non-biodegradable item

Detailed Solution for Test: Waste Water Story - Question 10

The correct option is Option A.
Non - Biodegradable objects or materials are those which do not easily decompose by natural factors. Non - Biodegradable Waste is the kind of waste that cannot be decomposed by the biological processes. Most of the inorganic, plastic and artificial waste are non-biodegradable.
 

Test: Waste Water Story - Question 11

Water borne disease is 

Detailed Solution for Test: Waste Water Story - Question 11

Waterborne diseases are caused by drinking contaminated or dirty water.Contaminated water can cause many types of diarrheal diseases, including Cholera, and other serious illnesses such as Guinea worm disease, Typhoid, and Dysentery.

Test: Waste Water Story - Question 12

Select the disease that is not caused by improper disposal of sewage 

Detailed Solution for Test: Waste Water Story - Question 12

Heart attack is not caused by improper disposal of sewage .

Test: Waste Water Story - Question 13

Select those which are organic substances present in waste water 

Detailed Solution for Test: Waste Water Story - Question 13

Pesticides, Herbicides, Fruits and vegetables waste  are organic substances present in waste water . 

Test: Waste Water Story - Question 14

The sludge waste originates from 

Test: Waste Water Story - Question 15

What is the full form of WWTP

Detailed Solution for Test: Waste Water Story - Question 15

WWTP stands for Waste Water Treatment Plant

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