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1
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one of them?
A
$$\left( {n - 1} \right){d^3}n{s^2}$$
B
$$\left( {n - 1} \right){d^5}n{s^1}$$
C
$$\left( {n - 1} \right){d^8}n{s^2}$$
D
$$\left( {n - 1} \right){d^5}n{s^2}$$
2
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
The number of d-electrons retained in Fe2+ (At no of Fe = 26) ion is :
A
4
B
5
C
6
D
3
3
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
For making good quality mirrors, plates of float glass are used. These are obtained by floating molten glass over a liquid metal which does not solidify before glass. The metal used can be :
A
tin
B
sodium
C
magnesium
D
mercury
4
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
What would happen when a solution of potassium chromate is treated with an excess of dilute nitric acid?
A
$$Cr_2O^{2-}_7$$ and H2O are formed
B
$$CrO^{2-}_4$$ is reduced to +3 state of Cr
C
$$CrO^{2-}_4$$ is oxidized to +7 state of Cr
D
Cr3+ and $$Cr_2O^{2-}_7$$ are formed
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