Q10 of 55 Page 1

Complete the following equations:

(i)


(ii)


(i)

Potassium permanganate is a good oxidising agent. Manganese gets reduced to +2 from +7 oxidation state, while nitrogen gets oxidised from +3(nitrite) to +5(nitrate).


(ii)


In this reaction chromium gets reduced to +3 oxidation state from +6. It acts as a strong oxidising agent. The above reaction is only reduction half of the reaction. It oxidises iodides to iodine, sulphides to sulphur, iron(ii) to iron(iii) and so on.


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7

Name the compound which on polymerization gives neoprene?

 9

Write the role of the following:

(i) CO in the purification of Nickel.


(ii) Graphite rod in the electrometallurgy of aluminium.


 11

Write the state of hybridization, shape and IUPAC name of the complex [Ni(CN)4]2-. (Atomic number of Ni=28)

 12

Write chemical equations when:

(i) methyl chloride is treated with AgNO2.


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