Oxygen was discovered by
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The chemical name of calgon is
Permanent hardness cannot be removed by
Match the reactants in List-$I$ with the products in List-$II$.
List-$I$ List-$II$ $(a). H_2O + H_2S$ $(i). (H_3O^{+}, HS^{-})$ $(b). H_2O + N^{3-}$ $(ii). (NH_3, OH^{-})$ $(c). H_2O + SiCl_4$ $(iii). (OH^{-}, H_3S^{+})$ $(d). H_2O + F_2$ $(iv). (SiO_2, HCl)$ $(v). (SiO_4^{4-}, Cl_2)$ $(vi). (O_2, F^{-})$ $(vii). (HF, OH^{-})$ $(viii). (OH^{-}, NH_3)$
| List-$I$ | List-$II$ |
| $(a). H_2O + H_2S$ | $(i). (H_3O^{+}, HS^{-})$ |
| $(b). H_2O + N^{3-}$ | $(ii). (NH_3, OH^{-})$ |
| $(c). H_2O + SiCl_4$ | $(iii). (OH^{-}, H_3S^{+})$ |
| $(d). H_2O + F_2$ | $(iv). (SiO_2, HCl)$ |
| $(v). (SiO_4^{4-}, Cl_2)$ | |
| $(vi). (O_2, F^{-})$ | |
| $(vii). (HF, OH^{-})$ | |
| $(viii). (OH^{-}, NH_3)$ |
Calgon is
Which of the following is correct about heavy water?
Medium
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