Formative Assessment EV- 3 - Digital Project by minna rowther https://padlet.com/minnarowther/inayfqvgujtcyfca Chapter : Acids , Bases and Salts By : Haifa 7B (GIRLS) en-us 2021-01-14 09:47:15 UTC 2025-06-21 15:01:27 UTC hello@padlet.com https://images.unsplash.com/photo-1571172964533-d2d13d88ce7e?ixid=MXw3ODI2fDB8MXxzZWFyY2h8M3x8aGVhcnR8ZW58MHx8fA&ixlib=rb-1.2.1 Students of grade VII while doing a project on river Yamuna, found that the water of Yamuna is acidic beyond limits as the factory wastes are dumped into the river. They wrote to the Municipal Corporation of the state suggesting ways to reduce this kind of pollution. minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086457049 2021-01-14 09:54:59 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086457049 1. If you are one of them, suggest two ways to reduce the acidity of river Yamuna. minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086458838 2021-01-14 09:55:38 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086458838 This treatment method is used if water is acidic (low pH). Soda ash (sodium carbonate) and sodium hydroxide raise the pH of water to near neutral when injected into a water system. Unlike neutralizing filters, they do not cause hardness problems in treated water. minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086464957 2021-01-14 09:57:46 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086464957 1) Soda ash/sodium hydroxide injection minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086467610 2021-01-14 09:58:39 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086467610 reverse osmosis or granulated activated carbon system can be used minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086513675 2021-01-14 10:14:00 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086513675 2) minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086515522 2021-01-14 10:14:40 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086515522 2. Why do you think it is important to treat the factory wastes before they are dumped into the rivers? minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086518310 2021-01-14 10:15:36 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086518310 Factory wastes contain acids which if untreated and discharged into water bodies will cause harm to fish and other aquatic organisms living in water bodies. Therefore, they should first be treated with basic substances to neutralise them and then discharged into water bodies. minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086523423 2021-01-14 10:17:22 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086523423 https://www.youtube.com/watch?v=1yvN3B6oafU minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086530943 2021-01-14 10:19:54 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086530943 minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086533773 2021-01-14 10:20:53 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086533773 minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086540969 2021-01-14 10:23:14 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086540969 minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086542169 2021-01-14 10:23:36 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086542169 3. How does neutralisation reaction play an important role in our daily life. Explain by giving any three examples. minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086544691 2021-01-14 10:24:28 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086544691 minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086554466 2021-01-14 10:27:47 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1086554466 minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1088056955 2021-01-14 16:47:58 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1088056955 minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1088074578 2021-01-14 16:51:14 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1088074578 minnarowther https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1088110769 2021-01-14 16:58:03 UTC https://padlet.com/minnarowther/inayfqvgujtcyfca/wish/1088110769