1
IIT-JEE 1992
MCQ (Single Correct Answer)
+1
-0.25
For the redox reaction:
$$MnO_4^ - + {C_2}O_4^{ - 2} + {H^ + }$$ $$ \to M{n^{2 + }} + C{O_2} + {H_2}O$$
The correct coefficients of the reactants for the balanced reaction are
A
$$MnO_4^ - \,\, \to \,\,2,\,\,{C_2}O_4^{2 - }\, \to \,\,5,\,{H^ + } \to \,\,16$$
B
$$MnO_4^ - \,\, \to \,\,16,\,\,{C_2}O_4^{2 - }\, \to \,\,5,\,{H^ + } \to \,\,2$$
C
$$MnO_4^ - \,\, \to \,\,5,\,\,{C_2}O_4^{2 - }\, \to \,\,16,\,{H^ + } \to \,\,2$$
D
$$MnO_4^ - \,\, \to \,\,2,\,\,{C_2}O_4^{2 - }\, \to \,\,16,\,{H^ + } \to \,\,5$$
2
IIT-JEE 1990
MCQ (Single Correct Answer)
+1
-0.25
The oxidation number of phosphorus in Ba(H2PO2) is :
A
+3
B
+2
C
+1
D
-1
3
IIT-JEE 1988
MCQ (Single Correct Answer)
+1
-0.25
The equivalent weight of MnSO4 is half of its molecular weight, when it converts to
A
Mn2O3
B
MnO2
C
$$MnO_4^ - $$
D
$$MnO_4^{2 - }$$
4
IIT-JEE 1982
MCQ (Single Correct Answer)
+1
-0.25
The oxidation number of carbon in CH2O is
A
-2
B
+2
C
0
D
+4
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