Class 10 Chemistry MCQs – Practice Test 2 (Chapter 7)

Environmental Chemistry II Water MCQ with Answers PDF Download – Test 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 Class 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 App Download – Free Class 10 Chemistry MCQ App to learn properties of water, water pollution, types of hardness of water test prep for free online classes.

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

Environmental Chemistry II Water MCQ – Practice Test 2 PDF Download

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

Class 10 Chemistry Notes App & e-Book – Environmental Chemistry II Water Exam Prep

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