Q11 of 55 Page 1

Complete the following equation:



Potassium permanganate is a strong oxidising agent. Manganese gets reduced to +2 oxidation state from +7 by oxidising sulphur to +6 from +4 oxidation state.



When acid is added to chromate solution it gets converted to dichromate. There is no change in oxidation state.


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What are biocatalysts? Give an example.

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Write the role of the following:

(i) Iodine in the refining of zirconium.


(ii) Silica in the extraction of copper from copper matte.


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Write the state of hybridization, shape and IUPAC name of the complex [Co(NH3)6]3+ . (Atomic number of Co=27).

 13

Write the equations when

(i) Ethyl Chloride is treated with alcoholic KOH.


(ii) Chlorobenzene is treated with CH3Cl in presence of anhydrous AlCl3.