Class 10 Chemistry MCQs - Chapter 7

Environmental Chemistry II Water Multiple Choice Questions (MCQ) PDF Download - 2

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The Environmental chemistry ii water Multiple Choice Questions (MCQ Quiz) with Answers PDF (Environmental Chemistry II Water MCQ PDF e-Book) download Ch. 7-2 to learn Grade 10 Chemistry Course. Study Properties of Water Multiple Choice Questions and Answers (MCQs) PDF, Environmental Chemistry II Water Quiz Questions and Answers to study online high school courses. The Environmental Chemistry II Water MCQ App Download: Free educational app for properties of water, water pollution, types of hardness of water test prep for free online classes.

The MCQs: What percentage of fresh water is available to man; "Environmental Chemistry II Water" App (Android, iOS) with answers: 0.02; 0.2; 0.002; 0.0002; to study online high school courses. Practice Properties of Water MCQ Questions, download Apple e-Book (Free Sample) for online school classes.

Environmental Chemistry II Water MCQs with Answers PDF Download: Quiz 2

MCQ 6:

What percentage of fresh water is available to man?

0.2
0.02
0.002
0.0002

MCQ 7:

What is the second step of raw water treatment?

sedimentation
coagulation
filtration
chlorination

MCQ 8:

What is the percentage of water from rivers and lakes?

0
0.002
0.006
0.021

MCQ 9:

Permanent hardness of water is caused due to the presence of dissolved

calcium hydrogen carbonates
magnesium hydrogen carbonates
chlorides of magnesium
Sulphates of magnesium

MCQ 10:

Step of sewage water treatment in which there are some aeration and organic material is converted to inorganic materials is called

primary sewage treatment
secondary sewage treatment
activated sludge treatment
chlorination

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