Q. No.The reason for not utilizing HCl to acidify the medium in oxidation reactions involving KMnO4 (in an acidic environment) is:
1.
Both HCl and KMnO4 act as oxidizing agents.
2.
KMnO4 oxidizes HCl into Cl2 which is also an oxidizing agent.
3.
KMnO4 is a weaker oxidizing agent than HCl.
4.
KMnO4 acts as a reducing agent in the presence of HCl.
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The colour of KMnO4 is due to
1. d – d transition
2. Charge transfer spectra
3. Polarisation of ion
4. p – d transition
Which of the following element does not show a variable oxidation state?
1. Fe
2. Mn
3. Cu
4. Zn
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In dichromate dianion
1. 4 Cr – O bonds are equivalent
2. 6 Cr – O bonds are equivalent
3. All Cr – O bonds are equivalent
4. All Cr – O bonds are non equivalent
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