1
JEE Main 2022 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

$$\mathrm{Fe}^{3+}$$ cation gives a prussian blue precipitate on addition of potassium ferrocyanide solution due to the formation of :

A
$$\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]_{2}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$$
B
$$\mathrm{Fe}_{2}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{2}$$
C
$$\mathrm{Fe}_{3}\left[\mathrm{Fe}(\mathrm{OH})_{2}(\mathrm{CN})_{4}\right]_{2}$$
D
$$\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}$$
2
JEE Main 2022 (Online) 26th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The metal complex that is diamagnetic is (Atomic number: $$\mathrm{Fe}, 26 ; \mathrm{Cu}, 29)$$

A
$$\mathrm{K}_{3}\left[\mathrm{Cu}(\mathrm{CN})_{4}\right]$$
B
$$\mathrm{K}_{2}\left[\mathrm{Cu}(\mathrm{CN})_{4}\right]$$
C
$$\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{4}\right]$$
D
$$\mathrm{K}_{4}\left[\mathrm{FeCl}_{6}\right]$$
3
JEE Main 2022 (Online) 25th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of energy of absorption for the following metal complexes is :

A : [Ni(en)3]2+ , B : [Ni(NH3)6]2+ , C : [Ni(H2O)6]2+

A
C < B < A
B
B < C < A
C
C < A < B
D
A < C < B
4
JEE Main 2022 (Online) 30th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Correct formula of the compound which gives a white precipitate with BaCl2 solution, but not with AgNO3 solution, is :

A
[Co(NH3)5Br]SO4
B
[Co(NH3)5SO4]Br
C
[Pt(NH3)4Cl2]Br2
D
[Pt(NH3)4Br2]Cl2
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