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1
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
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
Which one of the following nitrates will leave behind a metal on strong heating?
A
Copper nitrate
B
Manganese nitrate
C
Silver nitrate
D
Ferric nitrate
4
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
How do we differentiate between Fe3+ and Cr3+ in group III?
A
by taking excess of NH4OH solution
B
by increasing $$NH_4^+$$ ion concentration
C
by decreasing OH- ion concentration
D
both (b) and (c)
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