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

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Environmental Chemistry II Water MCQ – Practice Test 10 PDF Download

MCQ 46: What percentage of sodium chloride is present in seawater?

0.02
0.1
0.034
0.01

MCQ 47: Which of the following is an intestinal disease caused by a parasite, entamoeba?

cholera
dysentery
jaundice
hepatitis

MCQ 48: What is given when electricity is passed through acidified water in a voltammeter?

oxygen only
hydrogen only
nitrogen
oxygen and hydrogen

MCQ 49: Which of the following is transmitted by fecal contamination of water or food by an encysted organism?

cholera
dysentery
jaundice
hepatitis

MCQ 50: Step of sewage water treatment in which effluent from a sewage plant is treated with chlorine 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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Environmental Chemistry II Water MCQs

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