Chapter 7: Class 10 Chemistry Exam Tests
Class 10 Chemistry MCQs - Chapter 7
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MCQ 46: What percentage of sodium chloride is present in seawater?
MCQ 47: Which of the following is an intestinal disease caused by a parasite, entamoeba?
MCQ 48: What is given when electricity is passed through acidified water in a voltammeter?
MCQ 49: Which of the following is transmitted by fecal contamination of water or food by an encysted organism?
MCQ 50: Step of sewage water treatment in which effluent from a sewage plant is treated with chlorine is called
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