9th Class Chemistry MCQS Electrochemistry Online Test 5
the-colour-of-cu-3-csup-3-e-2-b-2-3-c-2-fsup-3-e-is-3-a_-_blue,the-concentrated-solution-of-common-salt-in-water-is-called_-_brine,the-example-of-weak-electrolyte-is-3-a_-_ca-28-oh-29-3-csub-3-e-2-3-c-2-fsub-3-e,the-formula-of-rust-is-3-a_-_fe-3-csub-3-e-2-3-c-2-fsub-3-eo-3-csub-3-e-3-3-c-2-fsub-3-e,the-most-common-example-of-corrosion-is_-_rusting-of-iron,the-oxidation-number-chlorine-in-k-cl-o-3-csub-3-e-3-3-c-2-fsub-3-e-3-a_-_5,the-oxidation-number-group-1-elements-is-3-a_-_1,the-oxidation-number-nitrogen-in-hno-3-csub-3-e-3-3-c-2-fsub-3-e-is-3-a_-_5,the-oxidation-number-of-an-element-at-free-state_-_0,the-oxidation-number-of-chromium-in-k-3-csub-3-e-2-3-c-2-fsub-3-e-cr-3-csub-3-e-2-3-c-2-fsub-3-eo-3-csub-3-e-7-3-c-2-fsub-3-e_-_6,the-oxidation-number-of-hydorgen-in-metal-hydrides-is-3-a_-_1,the-oxidation-number-of-oxygen-in-copper-oxide-is-3-a_-_1,whose-reduction-is-occuring-in-the-following-reaction-3-a-3-cbr-3-e-2-zn-o-2-b-c-3-f-2-zn-2-b-co-3-csub-3-e-2-3-c-2-fsub-3-e_-_cu
Questions | 13 |
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Available | Always |
Pass rate | 45 % |
Backwards navigation | Allowed |