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
Conductivity (Seimen’s S) is directly proportional to area of the vessel and the concentration of the solution in it and is inversely proportional to the length of the vessel then, then constant of proportionality is expressed in :
A
Sm mol-1
B
Sm2 mol-1
C
S-2m2 mol
D
S2m2 mol-2
3
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
$$\beta$$ - particle is emitted in radioactivity by
A
conversion of proton to neutron
B
from outermost orbit
C
conversion of neutron to proton
D
$$\beta$$ -particle is not emitted
4
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
If half-life of a substance is 5 yrs, then the total amount of substance left after 15 years, when initial amount is 64 grams is
A
16 grams
B
2 grams
C
32 grams
D
8 grams

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