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Among the following, the coloured compound is

CuCl
K3[Cu(CN)4]
CuF2
[Cu(CH3CN)4]BF4
Additional Questions

In the electrolytic refining of Zinc, ______.

Answer

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

Answer

The outer electron configuration of Gd (Atomic number: 64) is:

Answer

Anhydrous ferric chloride is prepared by

Answer

Identify the ore not containing iron

Answer

Heating mixture of Cu2O and Cu2S will give

Answer

KMnO4 can be prepared from K2MnO4 as per the reaction:

3MnO2–
4
+ H2O ⇌ 2MnO
4
+ MnO2 + 4OH

The reaction can go to completion by removing OH ions by adding

Answer

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

Answer

Extraction for zinc blende is achieved by

Answer

Gold is extracted by hydro metallurgical process, based on its property

Answer
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