10th class Chemistry chapter 15 online mcq test with answers for matric part 2 chemistry unit 15(Water Preparation)

Chemistry 10th Class English Medium Unit 15 Online Test

Sr. #	Questions	Answers Choice
1	Sea water in unfit for drinking purpose die to the presence of.	Salts Algae Fishes All of them
2	Inland water includes.	River Lakes Streams All of them
3	The percentage of ocean in world water is.	50% 67% 97% 25%
4	The percentage of water in human body is.	40% 50% 60% 70%
5	Which one of the following gases is used to destroy harmful bacteria in water.	Iodine Chlorine Fluorine Bromine
6	Which one of the following diseases severe diarrhea and can be fatal?	Joundice Cholera Dysentery Typhoid
7	Which one of the diseases causes severe diarrhea and can be fatal?	Jaundice Dysentery Cholera Typhoid
8	Which one of the following diseases causes liver inflammation?	Typhoid Jaundice Cholera Hapatitis
9	Rapid growth of algae in water bodies is because of detergent having.	Carbonate salts. Sulphonic acid salts. Sulphate salts. Phosphate salts.
10	Which one of the following salts makes the water permanently hard?	NaCO<sub>3</sub> NaHCO<sub>3</sub> CA(HCO<sub>3</sub>)<sub>2</sub> CaSO<sub>4</sub>
11	Permanent hardness is removed by adding.	Na<sub>2</sub> zeolite. Soda lime Lime water Quick lime
12	Temporary hardness is removed by adding.	Quick lime Slaked lime Lime stone Lime water.