1
JEE Main 2024 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

In which one of the following metal carbonyls, $$\mathrm{CO}$$ forms a bridge between metal atoms?

A
$$\left[\mathrm{Os}_3(\mathrm{CO})_{12}\right]$$
B
$$\left[\mathrm{Ru}_3(\mathrm{CO})_{12}\right]$$
C
$$\left[\mathrm{Mn}_2(\mathrm{CO})_{10}\right]$$
D
$$\left[\mathrm{Co}_2(\mathrm{CO})_8\right]$$
2
JEE Main 2024 (Online) 27th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Identity the incorrect pair from the following :

A
Haber process - Iron
B
Polythene preparation - $$\mathrm{TiCl}_4, \mathrm{Al}\left(\mathrm{CH}_3\right)_3$$
C
Photography - AgBr
D
Wacker process - $$\mathrm{Pt} \mathrm{Cl}_2$$
3
JEE Main 2024 (Online) 27th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Identify from the following species in which $$\mathrm{d}^2 \mathrm{sp}^3$$ hybridization is shown by central atom :

A
$$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$$
B
$$\mathrm{SF}_6$$
C
$$\left[\mathrm{Pt}\left(\mathrm{Cl}_4\right)\right]^{2-}$$
D
$$\mathrm{BrF}_5$$
4
JEE Main 2024 (Online) 27th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Consider the following complex ions

$$\begin{aligned} & \mathrm{P}=\left[\mathrm{FeF}_6\right]^{3-} \\ & \mathrm{Q}=\left[\mathrm{V}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+} \\ & \mathrm{R}=\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+} \end{aligned}$$

The correct order of the complex ions, according to their spin only magnetic moment values (in B.M.) is :

A
R < Q < P
B
R < P < Q
C
Q < R < P
D
Q < P < R
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