Which one of the following ions exhibits colour in aqueous solution
Sc3+
Ni2+
Ti4+
Zn2+
Additional Questions
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Cyanide process is used for extraction of |
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Among the following, the coloured compound is |
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In the electrolytic refining of Zinc, ______. |
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A red solid is insoluble in water. However, it becomes soluble if some KI is added to water. Heating the red solid in a test tube results in liberation of some violet coloured fumes and droplets of a metal appear on the cooler parts of the test tube. The red solid is |
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The outer electron configuration of Gd (Atomic number: 64) is: |
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Anhydrous ferric chloride is prepared by |
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Identify the ore not containing iron |
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Heating mixture of Cu2O and Cu2S will give |
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KMnO4 can be prepared from K2MnO4 as per the reaction: 3MnO2– The reaction can go to completion by removing OH– ions by adding |
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The correct order of $\text{E}_{\text{M}^{2+}/\text{M}}^o$ values with negative sign for the four successive elements Cr, Mn, Fe and Co is |
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