![Oatey Fast Set 4 in. PVC Hub Toilet Flange with Test Cap and Stainless Steel Ring 436572 - The Home Depot Oatey Fast Set 4 in. PVC Hub Toilet Flange with Test Cap and Stainless Steel Ring 436572 - The Home Depot](https://images.thdstatic.com/productImages/cae94d83-3462-4b68-b20b-8f96f25ca60f/svn/oatey-toilet-flanges-436572-64_600.jpg)
Oatey Fast Set 4 in. PVC Hub Toilet Flange with Test Cap and Stainless Steel Ring 436572 - The Home Depot
![a Explain with the help of a balanced equation the brown ring test for nitric acid.b Why is freshly prepared ferrous sulphate solution used for testing the nitrate radical in the brown a Explain with the help of a balanced equation the brown ring test for nitric acid.b Why is freshly prepared ferrous sulphate solution used for testing the nitrate radical in the brown](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/66115/content_1.jpg)
a Explain with the help of a balanced equation the brown ring test for nitric acid.b Why is freshly prepared ferrous sulphate solution used for testing the nitrate radical in the brown
![Oatey Fast Set 4 in. ABS Hub Toilet Flange with Test Cap and Stainless Steel Ring 436562 - The Home Depot Oatey Fast Set 4 in. ABS Hub Toilet Flange with Test Cap and Stainless Steel Ring 436562 - The Home Depot](https://images.thdstatic.com/productImages/b664277c-da8e-4695-84a4-6502a64780e2/svn/oatey-toilet-flanges-436562-64_600.jpg)