1
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following reaction is possible at anode?
A
2Cr3+ + 7H2O $$\to Cr_2O_7^{2-}$$ + 14H+
B
F2 $$\to$$ 2F-
C
(1/2) O2 + 2H+ $$\to$$ H2O
D
none of these
2
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
When the sample of copper with zinc impurity is to be purified by electrolysis, the appropriate electrodes are :
A
cathode = pure zinc, anode = pure copper
B
cathode = impure sample, anode = pure copper
C
cathode = impure zinc, anode = impure sample
D
cathode = pure copper, anode = impure sample
3
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following is a redox reaction ?
A
NaCl + KNO3 $$\to$$ NaNO3 + KCl
B
CaC2O4 + 2HCl $$\to$$ CaCl2 + H2C2O4
C
Mg(OH)2 + 2NH4Cl $$\to$$ MgCl2 + 2NH4OH
D
Zn + 2AgCN $$\to$$ 2Ag+ Zn(CN)2
4
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
Units of rate constant of first and zero order reactions in terms of molarity M unit are respectively
A
sec-1, Msec-1
B
sec-1, M
C
Msec-1, sec-1
D
M, sec-1
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