111. Which of the following compounds shows optical isomerism?
A
$${\left[ {Co{{\left( {CN} \right)}_6}} \right]^{3 - }}$$
B
$${\left[ {Cr{{\left( {{C_2}{O_4}} \right)}_3}} \right]^{3 - }}$$
C
$${\left[ {ZnC{I_4}} \right]^{2 - }}$$
D
$${\left[ {Cu{{\left( {N{H_3}} \right)}_4}} \right]^{2 + }}$$
Answer :
$${\left[ {Cr{{\left( {{C_2}{O_4}} \right)}_3}} \right]^{3 - }}$$
112. The name of the compound $$\left[ {Co{{\left( {N{H_3}} \right)}_5}N{O_2}} \right]C{l_2}$$ will be
A
pentaamminonitrocobalt(II) chloride
B
pentaamminenitrochloridecobaltate(III)
C
pentaamminenitrocobalt(III) chloride
D
pentanitrosoamminechlorocobaltate(III)
Answer :
pentaamminenitrocobalt(III) chloride
113. Electronic configuration of $${\left[ {Cu{{\left( {N{H_3}} \right)}_6}} \right]^{2 + }}$$ on the basis of crystal field splitting theory is
A
$$t_{2g}^4e_g^5$$
B
$$t_{2g}^6e_g^3$$
C
$$t_{2g}^9e_g^0$$
D
$$t_{2g}^5e_g^4$$
Answer :
$$t_{2g}^6e_g^3$$
114. $${\left[ {Fe{{\left( {{H_2}O} \right)}_6}} \right]^{2 + }}$$ and $${\left[ {Fe{{\left( {CN} \right)}_6}} \right]^{4 - }}$$ differ in :
A
geometry, magnetic moment
B
geometry, hybridization
C
magnetic moment, colour
D
hybridization, number of $$d$$ - electrons
Answer :
magnetic moment, colour
115. Which of the following energy diagrams shows the electron distribution according to the crystal field model of the $$3d$$ - electrons in $${\left[ {CoC{l_4}} \right]^{2 - }}?$$
A
B
C
D
Answer :
116.
Which of the following statements is correct ?
( Atomic number of $$Ni = 28$$ )
A
$$Ni{\left( {CO} \right)_4}$$ is diamagnetic and $${\left[ {NiC{l_4}} \right]^{2 - }}$$ and $${\left[ {Ni{{\left( {CN} \right)}_4}} \right]^{2 - }}$$ are paramagnetic
B
$$Ni{\left( {CO} \right)_4}$$ and $${\left[ {Ni{{\left( {CN} \right)}_4}} \right]^{2 - }}$$ are diamagnetic and $${\left[ {NiC{l_4}} \right]^{2 - }}$$ is paramagnetic
C
$$Ni{\left( {CO} \right)_4}$$ and $${\left[ {NiC{l_4}} \right]^{2 - }}$$ are diamagnetic and $${\left[ {Ni{{\left( {CN} \right)}_4}} \right]^{2 - }}$$ is paramagnetic
D
$${\left[ {NiC{l_4}} \right]^{2 - }}$$ and $${\left[ {Ni{{\left( {CN} \right)}_4}} \right]^{2 - }}$$ are diamagnetic and $$Ni{\left( {CO} \right)_4}$$ is paramagnetic
Answer :
$$Ni{\left( {CO} \right)_4}$$ and $${\left[ {Ni{{\left( {CN} \right)}_4}} \right]^{2 - }}$$ are diamagnetic and $${\left[ {NiC{l_4}} \right]^{2 - }}$$ is paramagnetic
117.
Which of the following statement is not true for the reaction given below ?
$${\left[ {Cu{{\left( {{H_2}O} \right)}_4}} \right]^{2 + }} + 4N{H_3} \rightleftharpoons {\left[ {Cu{{\left( {N{H_3}} \right)}_4}} \right]^{2 + }} + 4{H_2}O$$
A
It is a ligand substitution reaction
B
$$N{H_3}$$ is relatively strong field ligand while $${H_2}O$$ is a weak field ligand
C
During the reaction, there is a change in colour form light blue to dark blue
D
$${\left[ {Cu{{\left( {N{H_3}} \right)}_4}} \right]^{2 + }}$$ has tetrahedral structure and is paramagnetic
Answer :
$${\left[ {Cu{{\left( {N{H_3}} \right)}_4}} \right]^{2 + }}$$ has tetrahedral structure and is paramagnetic
118.
Match the column I with column II and mark the appropriate choice.
| Column I | Column II | ||
|---|---|---|---|
| a. | Estimation of hardness of water | 1. | $$cis$$ - Platin |
| b. | Detection and estimation of nickel | 2. | $$EDTA$$ |
| c. | Electroplating | 3. | Dimethylglyoxime |
| d. | Treatment of cancer | 4. | Potassium dicyanoargentate |
A
a - 1, b - 4, c - 2, d - 3
B
a - 2, b - 3, c - 4, d - 1
C
a - 3, b - 1, c - 4, d - 2
D
a - 4, b - 2, c - 3, d - 1
Answer :
a - 2, b - 3, c - 4, d - 1
119. The number of geometrical isomers for $$\left[ {Pt{{\left( {N{H_3}} \right)}_2}} \right]C{l_2}$$ is
A
3
B
4
C
1
D
2
Answer :
2
120. The IUPAC name for the complex $$\left[ {Co\left( {N{O_2}} \right){{\left( {N{H_3}} \right)}_5}} \right]C{l_2}$$ is:
A
pentaammine nitrito-$$N$$-cobalt(II) chloride
B
pentaammine nitrito-$$N$$-cobalt(III) chloride
C
nitrito-$$N$$-pentaamminecobalt(III) chloride
D
nitrito-$$N$$-pentaamminecobalt(II) chloride
Answer :
pentaammine nitrito-$$N$$-cobalt(III) chloride