Q. Which of the following metal carbonyl has structure in the diagram?

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A

$\left(\text{Cr(CO)}\right)_{\text{6}}$

B

$\left(\text{Mn}\right)_{\text{2}} \left(\text{(CO)}\right)_{\text{10}}$

C

$Fe_{2}\left(\right.CO\left(\left.\right)_{9}$

D

$\left(\text{Co}\right)_{\text{2}} \left(\text{(CO)}\right)_{\text{8}}$

Solution:

Among the given homoleptic carbonyls, given shape is adopted by $\left(\text{Mn}\right)_{\text{2}} \left(\text{(CO)}\right)_{\text{10}}$ .

Questions from NTA Abhyas 2022

1. An alkene $\left(\right.A\left.\right)$ on ozonolysis gives a mixture of two carbonyl compounds. Mixture on Clemmensen reduction gives just one alkane $\left(\right.B\left.\right)$ . $\left(\right.B\left.\right)$ is the lowest alkane which in pure form can not be prepared by standard Wurtz method. $\left(\right.A\left.\right)$ is

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5. The density of 2 M aqueous solution of NaOH is 1.28 g/cm$^3$. The molality of the solution is
[Given that molecular mass of NaOH = 40 g mol$^{-1}$]

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