$\pi$ bonding is not involved in

1. Ferrocene

2. Dibenzene Chromium

3. Zeise's Salt

4. Grignard Reagent

If excess of AgNO₃ solution is added to 100ml of 0.024M Solution of dichlorobis(ethylene diamine) cobalt(III) Choloride, how many moles of AgCl will be precipitated?

1. 0.0012

2. 0.0016

3. 0.0024

4. 0.0048

Which of the following is not an ambidentate ligand?

1. CN^-

2. NO₂^-

3. SCN^-

4. NH₃

[Cr(en)₂Br₂]⁺ can show

(1) Optical isomerism

(2) Geometrical isomerism

(3) Both (1) and (2)

(4) Neither (1) nor (2)

How many hydrate isomers are possible for the molecular formula CoCl₃,6H₂O?

1. One

2. Two

3. Three

4. Four

Which of the following complex will show geometrical as well as optical isomerism ?

1. [Pt(NH₃)₂Cl₂]

2. [Pt(NH₃)Cl₃]

3. [Pt(en)₂Cl₂]

4. [Pt(en)₃]⁴⁺

Pick out the correct statement with respect to [Mn(CN)₆]^3-

(1) it is sp³d² hybridised and octahedral

(2) It is sp³d² hybridised and tetrahedral

(3) It is d²sp³ hybridised and octahedral

(4) It is dsp² hybridised and square planar

EAN of Fe in K₃[Fe(CN)₆] is

1. 34

2. 35

3. 36

4. 47

$\mathrm{Out} \mathrm{of} {\mathrm{TiF}}_6^{2-}, {\mathrm{CoF}}_6^{3-}, {\mathrm{Cu}}_2{\mathrm{Cl}}_2 \mathrm{and} {\mathrm{NiCl}}_4^{2-}$ (At. no. Z of Ti = 22, CO = 27, Cu = 29, Ni = 28), the colourless species are

(a) ${\mathrm{TiF}}_6^{2-} \mathrm{and} {\mathrm{CoF}}_6^{3-}$

(b) ${\mathrm{Cu}}_2{\mathrm{Cl}}_2 \mathrm{and} {\mathrm{NiCl}}_4^{2-}$$$

(c) ${\mathrm{TiF}}_6^{2-} \mathrm{and} {\mathrm{Cu}}_2{\mathrm{Cl}}_2$

(d) ${\mathrm{CoF}}_6^{3-} \mathrm{and} {\mathrm{NiCl}}_4^{2-}$

An example of a sigma bonded organometallic compound is

(a) ruthenocene                  (b) Grignard's reagent

(c) ferrocene                      (d) cobaltocene