1
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Several blocks of magnesium are fixed to the bottom of a ship to :
A
make the ship lighter
B
prevent action of water and salt
C
prevent puncturing by under-sea rocks
D
keep away the sharks
2
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
For a cell reaction involving a two-electron change, the standard e.m.f. of the cell is found to be 0.295 V at 25oC. The equilibrium constant of the reaction at 25oC will be
A
29.5 $$\times$$ 10-2
B
10
C
1 $$\times$$ 1010
D
1 $$\times$$ 10-10
3
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
For the redox reaction Zn(s) + Cu2+(0.1 M) $$\to$$ Zn2+(1M) + Cu(s) taking place in a cell, $$E_{cell}^o$$ is 1.10 volt. Ecell for the cell will be ($$2.303{{RT} \over F}$$ = 0.0591)
A
1.80 volt
B
1.07 volt
C
0.82 volt
D
2.14 volt
4
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

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