1
Q
classical concept of oxidation
A
1) Addition of oxygen 2) Addition of electronegative element 3) Removal of either hydrogen or some electropositive element 4) All of these
2
Q
gain of electron
A
3
Q
oxidation no. of Cr in CrO5
A
6
3
Q
oxidation n of cobalt K[Co(CO)4]
A
-3
3
Q
oxidation state of 3 Br atoms in Br3O8 is
A
+6,+4,+6
4
Q
+1 oxidation no of Cl is in
A
ICl
5
Q
iron has lowest oxidation state is in
A
Fe(CO)5
6
Q
how many moles of K2Cr2O7 can be reduced by 1 mole of Sn2+
A
1/3
7
Q
sulphur has lowest oxi. state at
A
H2S
8
Q
kmno4 is reduced with oxalic acid in acidic sol oxi. no. of Mn changes from
A
+7-+2
9
Q
when Cu wire is placed in sol of AgNO3 the sol acquires blue colour. This is due to the formation of
A
Cu2+ ions
plant kingdom
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