Match the following:

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Mossbauer spectrum of $$Fe(CO)_5$$ at liquid nitrogen temperature in the presence of a field gradient and taking into effect quadrupole interaction [For ⁵⁷Fe,I=1/2 for the ground state and I = 3/2 for the first excited state], shows a 

Consider the ³¹P NMR (decoupled from ¹H and ¹⁹⁵Pt) spectra for the isomers of  'A' $$[PtBrCl(PMe_3)_2]$$ and 'B' [IrCl₃(PMe₃)₃], separately. The number of ³¹P NMR signals for the different isomers of the complexes are given in the table below. The correct answer is set.

Among the following statements, select those which best describe plastocyanine

A. Coordination geometry of $$Cu^{II}$$​$Cu$-ion is distorted tetrahedron
B. The geometry around Cu2+\text{Cu}^{2+}
$$Cu^{II}$$​ changes to square-planar on reduction
C. In EPR spectrum, the A_​∥ values are smaller in plastocyanine than in $$CuCl_4^{2-}$$​ 
D. The active site contains the amino acids histidine and cysteine only

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Th ground state term symbol and the $$g_j$$ value for $$Pr^{3+}$$ ion, respectively are (Atomic number of Pr is 59)​

Consider the following reactions.

​$$Os(CO)_3(PPh_3)_2+Br_2 \rightarrow Os(CO)_2(PPh_3)_2(Br)_2(A)+CO$$

$$Mo(CO)_6 + 3 PEt_3\rightarrow Mo(CO)_3(PEt_3)_3 (B) + 3 CO$$

The correct stereochemical dispositions of the Br ligands in A and the CO ligands in B, respectively, are

In solution, Vaska's complex is known to bind $$O_2$$ reversibly. In the product, oxidation state of the metal ion center coordination geometry and mode of binding of $$O_2$$, respectively are

The reaction(s)/ event(s) used to prove the existence of neutrinos is/are

A. $$e^+ + e^- \rightarrow \gamma + \gamma$$​​

B. $$^{113}\text{Cd}(n,\gamma)^{114}\text{Cd}^*$$​​

C. $$^{133}\text{Cs}(\alpha,4n)^{133}\text{La}$$​​

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Isolobal pairs from the fragments (A-D) is/are

A. {BH}

B. $$\{ \text{Fe(CO)}_3 \}$$​​

C. {P}

D. $${Co(CO)_3}$$​​

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Among the following feasible reaction(s) is/are?

A. $$\text{SiO}_2 + \text{LiAlH}_4 \xrightarrow{175-180^\circ \text{C}} \text{SiH}_4 + \text{LiAlO}_2$$​​

B. $$\text{SiH}_4 + 2 \text{O}_2 \xrightarrow{25^\circ \text{C}} \text{SiO}_2 + 2 \text{H}_2 \text{O}$$​​

C. $$\text{SiH}_4 + 4 \text{H}_2 \text{O} \xrightarrow{25^\circ \text{C}} 4 \text{H}_2 + \text{Si(OH)}_4 \quad (\text{Basic medium})$$​​

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Consider following statements regarding the magnetic moment of the 3d transition metal complexes:

A. Octahedral complexes of $$Mn^{II}$$​  (high spin) and $$Fe^{III}$$ (high spin) have $$\mu_{eff}$$ approximately equal to their $$\mu_{spin}$$ values.​

B. Tetrahedral complexes of $$Ni^{II}$$ and octahedral complexes of $$Co^{II}$$​ have orbital contribution added to their magnetic moments.

C. Orbital contribution is quenched for metal ions having A or E ground state.

D. Octahedral complexes of $$Cu^{II}$$ have $$\mu_{eff} > \mu_{spin}$$ value at 300 K due to orbital contribution added to their magnetic moments​

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