Q.

Statement I : 2CuCl→CuCl2+Cu is a disproportionation reaction.Statement II : All transition metals show disproportionation reactions.

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a

Statement I and II are correct

b

Statement I is correct and II is incorrect

c

Statement I is incorrect and statement II is correct

d

Statement I & II are incorrect

answer is B.

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Detailed Solution

I 'Cu' of Cu+ undergoes both oxidation(Cu+2) and reduction (Cu) Cu+ undergoes disproportionationII) Ox.state of tranition metals in elementary state is zero.Scandium cannot show other than +3 state. so it cannot undergo disproportionation reaction.Similarly many other transition elements do not undergo disproportionation reactions.Statement I is correctstatement II is false
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Statement I : 2CuCl→CuCl2+Cu is a disproportionation reaction.Statement II : All transition metals show disproportionation reactions.