Chemistry – Class XII – d & f Block Elements and Co-ordination Compounds - NEET & JEE Test Worksheet – 25 Multiple Choice Questions – Very Useful for Students appearing in Engineering & Other Entrance Examinations

d, f-block elements &
Coordination Compounds M.M. : 100


Marking Scheme: of AgCl get precipitated. The ionic formula of
(i) Each question is allotted 4 (four) marks for this compound would be –
each correct response. (A) [Co(NH3)4NO2Cl] [(NH3)Cl]
(ii) ¼ (one fourth) marks will be deducted for (B) [Co(NH3)5Cl] [Cl(NO2)]
indicating incorrect response of each question. (C) [Co(NH3)5NO2]Cl2
No deduction from the total score will be (D) [Co(NH3)5] [(NO2)2Cl2]
made if no response is indicated for an item in
Q.7 Which is not true in case of transition metals –
the answer sheet.
(A) They are malleable and ductile.
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(B) They have high melting and boiling points.
Q.1 Which of the following is not ferromagnetic? (C) They crystallise with body centered cubic
(A) Mg (B) Ni and hexagonal close packed structure only.




JI
(C) Co (D) Fe (D) They show variable oxidation states
Q.2 Which one of the following statements is not although not always.
correct- Q.8 Which of the following complex is with lowest
(A) Nickel forms Ni(CO)4 number of unpaired electron –
(B)All the transition metals form mono metallic (A) [NiF6]2– (B) [Cu(NH3)4]2+
carbonyls (C) [CoF6]3– (D) [Fe (EDTA)]–
(C) Carbonyls are formed by transition metals Q.9 Heating of Ag with dil. HNO3 give-
LA
(D) Transition metals form complexes (A) NO (B) NO2
Q.3 Consider the following complexes :
(C) N2O (D) N2O3
(I) K2PtCl6 (II) PtCl4.2NH3
Q.10 What is currently the most widely used white
(III) PtCl4.3NH3 (IV) PtCl4.5NH3
paint pigment?
Their electrical conductances in aq. solutions (A) TiO2 (B) ZnO
are-
(C) CaCO3 (D) PbCO3
(A) 256, 0, 97, 404 (B) 404, 0, 97, 256
(C) 256, 97, 0, 404 (D) 404, 97, 256, 0 Q.11 Which of the following is not a major
Q.4 Which isomeric form of complex compound difference between the transition and
maingroup elements?
[Ma4bc]n± gives three isomers as product by
(A) catalytic activity
A

replacing (a) by (b) (B) complex ion formation
[where a, b, c are monodentate simple ligands] (C) ability to share electrons.
(A) Trans (B) Cis (D) magnetic properties
(C) Cis-trans both (D) None Q.12 K3CoF6 is high spin complex. What is the
Q.5 Which of the following is not important in
catalytic activity? hydbrid state of Co atom in this complex –
(A) sp3d (B) sp3d2 (C) d2sp3 (D) dsp2
B


(A) complex ion formation
(B) multiple oxidation states Q.13 The neutral ligand is-
(C) ability to absorb gases (A) Chloro (B) Hydroxo
(D) vibrational energy of atoms (C) Ammine (D) Oxalato
Q.6 A co-ordination complex compound of cobalt Q.14 Which of the following statement is correct
has molecular formula containing five ammonia regarding the complex [CuL6]2+, one solution
molecules, one nitro group and two chlorine is blue and another is green.
atoms for one cobalt atom. One mole of this (A) Blue solution will have higher value of 0
compound produces three mole ions in an (B) Green solution will have higher value of 0
aqueous solution. On reacting this solution with
(C) Both have same value of 0
excess of silver nitrate solution, two molecules
(D) No prediction can be done regarding 0



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