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	Which disease cause when humans use water of industrial effluents.	Cancer Asthma Jaundice cholera
2	The lives of aquatic plants and animals are indirectly related to concentration of dissolved gas in water.	Nitrogen Hydrogen Oxygen Carbon
3	Temporary hardness of water is removed by adding.	Ca(OH)<sub>2</sub> NaOH KOH CaSO<sub>4</sub>
4	The process of removing temporary hardness of water.	Clark's method Washing soda method Sodium zeolite Filteration method
5	The removal of Mg⁺² and Ca⁺² Ion which are responsible for the hardness of water is called.	Temporary hardness Permanent hardness Water softening Hydrogen bonding
6	Sodium zeolite is resin of:	NaAl(SiO<sub>3</sub>)<sub>2</sub> KAl(SiO<sub>3</sub>)<sub>2</sub> LiAl(SiO<sub>3</sub>)<sub>2</sub> RbAl(SiO<sub>3</sub>)<sub>2</sub>
7	Which one of the following ion does not cause hardness in water?	Ca<sup>+2</sup> Mg<sup>-2</sup> SO<sup>-2</sup> Na<sup>+</sup>
8	Clark's method is used to remove the hardness of water, in this method which is used.	Ca(HCO<sub>3</sub>)<sub>2</sub> Na-Zeolite Ca-Zeolite Ca(OH)<sub>2</sub>
9	Which salt cause permanent hardness in water is:	Ca(HCO<sub>3</sub>)<sub>2</sub> Mg(HCO<sub>3</sub>)<sub>2</sub> CaCl<sub>2</sub> KCl
10	Salt makes the water permanently hard.	CaSO<sub>4</sub> Ca(HCO<sub>3</sub>)<sub>2</sub> NaHCO<sub>3</sub> NaCO<sub>3</sub>
11	Which one of the following salts makes the water permanent hard.	NaCO<sub>3</sub> NaHCO<sub>3</sub> Ca(HCO<sub>3</sub>)<sub>2</sub> CaSO<sub>4</sub>
12	Permanent hardness can be removed by using .	Soda lime Sodium Zeolite Quick lime Lime water

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