1
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
$$MnO_4^{2 - }$$
2
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
3
IIT-JEE 1981
MCQ (Single Correct Answer)
+1
-0.25
1 mole of N2H4 loses 10 moles of electrons to form a new compound Y. assuming that all nitrogen appears in the new compound , what is the oxidation state of nitrogen in Y ? (there is no change in the oxidation state of hydrogen)
A
-1
B
-3
C
+3
D
+5
4
IIT-JEE 1980
MCQ (Single Correct Answer)
+2
-0.5
M is molecular weight of KMnO4. The equivalent wight of KMnO4 when it is converted into K2MnO4 is
A
M
B
M/3
C
M/5
D
M/7
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