## Coordination Compounds Quiz-10

JEE Advanced is a high level exam that checks your concept by putting various types of questions. The questions are in a different format from JEE mains, herein the questions are : single correct multiple choice questions, multiple correct multiple choice questions, statement based questions and comprehension type questions..

Q1.
Select the correct statement
•  [Fe(CN)_6 ]^(4-)]and [Fe(H_2 O)_6 ]^(2+) can be distinguished by magnetic moment
•  [Ni(CN)_6 ]^(2-) and [Ni(CO)_4 ]both are diamagnetic
•  [Fe(CN)_6 ]^(3-) and [Co(NH_3 )_6 ]^(2+) have equal magnetic moment
•  All the above are correct statements
Solution
(d)

Q2.
Which is true for ,[Ni(en)_2 ]^(2+), Z(Ni)=28
•  Paramagnetism, dsp^2, square planar, CN of Ni =2
•  Diamagnetism, dsp^2 square planar, CN of Ni =4
•  Diamagnetism, sp^3 tetrahedral, CN of Ni =4
•  Paramagnetism , sp^3 square planar, CN of Ni =4
Solution
(b)

Q3. Among the following complexes (K-P) K_3 [Fe(CN)_6 ](K),(Co(NH_3 )_6 Cl_3 (L),
Na_3 [Co(ox)_3 ](M),[Ni(H_2 O)_6 ]Cl_2 (N),
K_2 [Pt(CN)_4 ](O) and [Zn(H_2 O)_6 ] (NO_3 )_2 (P) The diamagnetic complexes are
•  K, L, M, N
•  K, M, O, P
•  L,M, O, P
•  L, M, N, O
Solution
(c)

Q4. Extraction of Ag from sulphide ore and removal of unreacted silver from photographic plate involve complexes
•  [Ag(S_2 O_3 )_2 ]^(3-) in both
•  [Ag(CN)_2 ]^-in both
•  [Ag(S_2 O_3 )_2 ]^(3-),[Ag(CN)_2 ]^-
•  [Ag(CN)_2 ]^-,[Ag(S_2 O_3 )_2 ]^(3-)
Solution
(d)
Ag_2 S+CN^-→[Ag(CN)_2 ]^-
AgBr+2S_2 O_3^(2-)→[Ag(S_2 O_3 )_2 ]^(3-)+Br^-
In photographic
plate

Q5.FeSO_4 on treatment with excess of KCN gives a product that does not give test of Fe^(2+),the product formed is
•  [Fe(CN)_2 ]SO_4
•  K_3 [Fe(CN)_6]
•  K_4 [Fe(CN)_6]
•  KFe[Fe(CN)_6]
Solution
(c) FeSO_4+6KCN→K_2 SO_4+K_4 [Fe(CN)_6]

Q6. [Fe(H_2 O)_6 ]^(2+) and [Fe(CN)_6 ]^(4-) differ in
•  geometry, magnetic moment
•  Magnetic moment and colour
• Geometry and hybridization
•  None of the above
Solution
(b)

Q7.Select the correct statement
•  The d_(x^2-y^2 )andd_(z^2 ) orbitals are directed alon a set of mutually perpendicular x,y and z-axes. As a group these orbitals are called, e_g orbitals
•  Thed_xy,d_yzandd_xy orbitals lie between the axes and collectively called t_2g orbitals
•  Both (a) and (b) are correct
•  None of the above is correct
Solution
(c)

Q8.[Pt (NH_3 )(NO_2 )Py (NH_2 OH)]^+will form geometrical isomers
•  2
•  3
•  4
•  5
Solution
(b)II and III, IV and V are identical

Q9.The number of water molecule(s) directly bonded to the metal centre in CuSO_4 .5H_2 O is
•  1
•  2
•  3
•  4
Solution
(d) [Cu(H_2 O_4 )]SO_4.H_2 O coordination number of Cu is 4.

Q10. Extraction of metals or other processes is through the complex formation
I. Cyanide process
II. Monds process
III. Photographic fixing process
Complexes formed in these methods are
I II III

•  [Ag(NH_3 )_2 ] ClNi(CO)_4 [Ag(CN)_2 ]^-
•  [Ag(CN)_2 ]^- Ni(CO)_4 [A(S_2 O_3 )_2 ]^(3-)
•  [Ag(CN)_2 ]^- [Ag(S_2 O_3 )_2 ]^(3-) Ni(CO)_4
• [Cd(CN)_4 ]^(2-) Ni(CO)_4 [Ag(S_2 O_3 )_2 ]^(3-)
Solution
(b)
I. Ag_2 S+CN^-⟶[Ag(CN)_2 ]^-
II. Ni+4CO⟶[Ni(CO)_4]
III. AgBr+2S_2 O_3^(2-)⟶[Ag(S_2 O_3 )_2 ]^(3-)

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