1
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Excess of KI reacts with CuSO4 solution and then Na2S2O3 solution is added to it. Which of the statements is incorrect for this reaction?
A
Cu2I2 is reduced
B
Evolved I2 is reduced
C
Na2S2O3 is oxidized
D
CuI2 is formed
2
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
$$\left( {n - 1} \right){d^5}n{s^2}$$
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
Change Language
Which one of the following statements is correct?
A
From a mixed precipitate of AgCl and AgI, ammonia solution dissolves only AgCl
B
Ferric ions give a deep green precipitate on adding potassium ferrocyanide solution
C
On boiling a solution having K+, Ca2+ and HCO3 ions we get a precipitate of K2Ca(CO3)2.
D
Manganese salts give a violet borax bead test in the reducing flame
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