1
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
For the following cell with hydrogen electrodes at two different pressure p1 and p2. What will be the emf for the given cell :

$$\eqalign{ & Pt({H_2})|{H^ + }(aq)|Pt({H_2}) \cr & \,\,\,\,\,{p_1}\,\,\,\,\,\,\,\,\,\,\,\,\,\,1M\,\,\,\,\,\,\,\,\,\,\,\,{p_2} \cr} $$
A
$${{RT} \over F}{\log _e}{{{P_1}} \over {{P_2}}}$$
B
$${{RT} \over 2F}{\log _e}{{{P_1}} \over {{P_2}}}$$
C
$${{RT} \over F}{\log _e}{{{P_2}} \over {{P_1}}}$$
D
none of these
2
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
EMF of a cell in terms of reduction potential of its left and right electrodes is :
A
E = Eleft - Eright
B
E = Eleft + Eright
C
E = Eright - Eleft
D
E = -(Eright + Eleft)
3
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
4
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
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