CHAPTER # 6. Transition Elements MCQs
1. Which
of the following is a non-typical
transition element ?
(A)
Cr (B) Mn
(C)
Zn (D) Fe
2. Which
of the following is a typical transition
metal ?
(A) Sc (B) Y
(C) Ra (D) Co
3. f-block
elements are so called.
(A)
Non-typical transition
element
(B)
Outer transition elements
(C)
Normal transition elements
(D)
Inner transition
4. The
strength of binding energy of transition
elements depends upon
(A)
Number of electron pairs
(B)
Number of unpaired
electrons
(C)
Number of neutrons
(D)
Number of protons
5. Group VIB of transition elements contains
(A) Zn, Cd , Hg (B) Fe, Ru, Os
(C) Cr, Mo, W (D) Mn, Te, Re
6. Which
is the formula of tetra-amine
chloro nitro
platinum (IV) sulphate ?
(A)
[Pt(NH3)4(NO2)]SO4
(B)
[Pt NO2CI (NH3)4]SO4
(C)
[Pt CI (NO2)(NH3)]SO4
(D)
[Pt (NH3)4(NO2)CI]SO4
7. The
percentage of carbon in different types of
iron products is in the order of .
(A)
Cast iron > wrought iron
> steel
(B)
wrought iron > steel
> cast iron
(C)
cast iron > steel >
wrought iron
(D)
cast iron = steel >
wrought iron
8. The
colour of transition metal complexes is due to.
(A)
d-d transitions of
electrons
(B)
Para magnetic nature of
transition element
(C)
Ionization
(D)
Loss of s-electrons
9. Coordination
number of Pt in
[t
CI (NO2)(NH3)4]-2 is.
(A) 2- (B) 4
(C) 1 (D) 6
10. The
total number of transition elements is.
(A) 10 (B) 14
(C) 40 (D) 50
11. Transition
metals have very high melting and
boiling points due to.
(A)
Weak binding forces
(B)
Strong binding forces
(C)
Both of the above
(D)
None of the above
12. Substances
which are weakly attracted by which type of force are called as
paramagnetic substances.
(A)
Weak magnetic field
(B)
Strong magnetic field
(C)
Feeble magnetic field
(D)
None of the above
13. The
diamagnetic substances are
(A) Weakly repelled by a strong magnetic field (B)
Strongly repelled by a weak magnetic field
(C) Strongly repelled by a weak magnetic field (D)
Weakly repelled by a weak magnetic field.
14. Paramagnetic
behaviour is caused by the presence of.
(A)
Unparied electrons
(B)
Paired electrons
(C)
Paired protons
(D)
Paired electrons in an
aton, molecule or ion
15. The
transition elements includes.
(A)
Ti, Fe, Cr, Ni, Cu etc
(B)
Ti, Fe, Nb, Ta, Th, etc
(C)
Mo, W, Zr, Nb, etc
(D)
Ti, Fe, Ci, Ni, Cu, Mo, W,
Zr, Nb, Ta, Th, etc
16. Zn
has
(A)
Zero unpaired electrons
(B)
Five unpaired electrons
(C)
Three unpaired electrons
(D)
One paired electrons
17. In transition elements the orbital which
is responsible for the colour development is.
(A) s-orbital (B) f-orbital
(C) d-orbital (D) o-orbital
18. In
[Ti (H2O6)]3+ which wavelength of light
is absorbed.
(A)
Yellow light is absorbed
while blue and red light are transmitted
(B)
Green light is absorbed
(C)
Both of the above
(D)
None of the above
19. Alloy
steels are
(A) Iron atoms substituted by Cr, Mn, and Ni atoms
(B) Iron atoms substituted by Cr, and Mn atoms
(C) Iron atoms substituted by Mn and Ni atoms
(D) None of the above
20. Such compounds
containing the complex molecules or complex ions and capable
of.
(A) Dependent existence are called coordination compounds (B) Independent
existence are called coordination
compound
(C)
None of the above
(D)
A & B
21. A
complex compound may contain
(A)
Simple catoins and a
complexions
(B)
A complex cations and a
simple anion
(C)
Both of the above
(D)
None of the above
22. The
nomenclature of complex compounds is based upon the recommendation by the
(A)
Inorganic Nomenclature
Committee
(IUPAC)
(B)
Organic Nomenclature
Committee (IUPAC)
(C)
Both of the above
(D)
None of the above
23. In
writing the formula of a complex ion the
usual practice is to place
the symbol of the
(A)
Central metal atom second
(B)
Central metal atom third
(C)
Central metal atom 4rth
(D)
Central metal atom 1st
24. Pig
iron or cast iron contains
(A)
0.25% to 2.5% carbon
(B)
2.5% to 4.5% carbon
(C)
0.12% to 0.25% carbon
(D)
None of the above
25. Wrought
iron is manufactured from
(A)
Pig iron (B)
Cast iron
(C) Pig iron or cast iron (D)
Steel
26. In
open hearth process for the manufacturing
of steel.
(A)
Using cast iron, wrought
iron, or steel scrap
(B)
Using cast iron
(C)
just wrought iron
(D)
None of the above
27. In
galvanic cell.
(A) Al does not releases electrons and changes to al+3 ion
(B)
Ai releases and changes to
Al+3 ion
(C)
Both of the above
(D)
Both of the above
28. The
amount of iron destroyed each year by
corrosion equal to.
(A)
About 1/4th of its annual
production
(B)
About 1/3rd of its annual
production
(C\) Both 1/2nd of its annual
production
(D)
None of the above
29. Almost
all the chromates are
(A) Blue in colour (B) Green in colour
(C) Red in colour (D) Yellow in colour
30. K2Cr2O7(potassium
dichromate) is used
extensively
for.
(A)
Dyeing
(B)
Chrome tanning
(C)
As an oxidizing agent
(D)
All of the above are true
31. The
location of transition elements is in
between_________
a.
Lanthanides & actinides
b.
s and p block elements
c.
chalcogens and halogens
d.
d and f block elements
32. Compounds
attracted by applied magnetic field are called________
a)
Diamagnetic b) Paramagnetic
c)
Good conductor d) Ferromagnetic
33. When
light is exposed to transition element, then electrons jumps from lower orbitals
to higher
orbitals in___________
a)
f-orbitals b)
s-orbitals
c)
p-orbitals d)
d-orbitals
34. The
specie which donates electrons to central
metal
atom in co-ordination sphere is called
________
b) Anion b)
Cation
c)
Ligand d)
Acid
35.
Following ion is a
bidentate Ligand?
a) Ammonia b)
Oxalate
c)
Carbonyl d)
Cyanide
36.
The central atom along with
Ligand is called ________
a) Complex ion b)
Coordination sphere
c)
Ligand d) Complex compound
37.
Geometry of complex
compounds depends upon_________
a) no. of ligand
b) no. of chelates
c) hybridization of central metal
d) All of above
38.
For sp3d2
hybridization, the expected geometry will be_________
a) Tetrahydral b) Square planar
c)
Trigonal bipyramidal d) Octahedral
39.
Any process of chemical
decay of metals due to action of surrounding medium is
called
_________
a) Surrounding b) Enamel
c)
Corrosion d)
Coating
40.
When an active metal like
Al come in contact with less active element like Cu, then it produces
_____
a) Voltaic cell b)
Galvanic cell
c)
Electrolytic cell d) a &
b
41.
Which element has complete
d – orbital are
a) Ni b)
Fe
c) Zn
d)
Mn
42.
In Ag2+ the
number of electrons in 4 d orbital is
a) 7 b)
8
c) 6 d)
9
43.
A regular decrease in ionic
and atomic radii across the lanthanides is called
a) Contraction
b) I.P
c) Lanthanide Contraction
d) Complex formation
44.
The magnetic moment can be
measured by
a) Gouy’s balance b)
Haber’s balance
c)
Down’s balance d) All of these
45.
The magnetic moment is
related to the number of unpaired electrons (n) by the equation
a) 
n n 2 b) n(n2)
n n 2 b) n(n2) 
c)
n
n 2 d) n(n2)
46.
Diamagnetic compounds are
those which have
a) Paired electrons b)
Unpaired electrons
c)
Free electrons d) No electrons
47.
An extreme case of Para
magnetism is called
a) Diamagnetism b) Ferro
magnetism
c)
Isomerism d)
None of these
48.
The number of ligands
attached to the central metal atom or ion, usually varying from
a) 2 to 3 b)
2 to 4
c) 2
to 6 d)
2 to 7
49.
Co-ordinate compound with
co-ordinate six number have geometry
a) Tetrahedral
b) Square planner
c) May be tetrahedral or square planner
d) Octahedral
50.
Steel is an alloy of iron
and is classified into
a) Mild steel (0.1 – 0.2%C) and medium carbon steel (0.2 to 0.7%C)
b) Medium carbon steel (0.2 to 0.7%C) and high carbon steel (0.7 to
1.5%C)
c) Mild and high carbon steel
d) Mild medium and high carbon steel
51.
Ligands are classified
into
|
a)
One
|
b) Two
|
|
c)
Three
52. EDTA
is
|
d) Five
|
|
a) Monodentate
|
b) Bidentate
|
|
c) Polydentate
|
d) None of
these
|
53.
Which one is Bidentate
ligand
|
a) Cl-1
|
b) NH3
|
|
c) NH2(CH2), NH2
|
d) EDTA
|
54.
Complexes which are less
common have co-ordination number
a) 4 b)
5
c) 6 d)
All of these
55.
Complexes which have
octahedral geometry hybridized
a) SP3 b)
dSP2
c)
dSP3 d) d2SP3
56.
The geometry of a complex
depends upon
a) Co-ordination number
b) Type of hybridization of central metal atom
c) Chelates
d) Both a & b
57.
Brass contain 20% zinc
and
a) 80% Cu b)
70% Cu
c)
60% Cu d)
50% Cu
58.
Bell metal contains
a) 80% Cu + 20% Zn
b) 80% Cu + 20% Sn
c) 20% Cu + 80% Zn
d) 20% Cu + 80% Sn
59.
The formula of blue vitriol
is
a) CuSO4 b)
CuSO4.3H2O
c)
CuSO4.4H2O d) CuSO4.5H2O
60.
The transition elements
usually have very ______ melting and
boiling points.
a) Low b) High
c)
Intermediate d) None of these
61.
Finely divided iron is used
in _______
a) Haber process
b) Catalytic Hydrogenation
c) Oxidation of ammonia to nitric oxide
d) Contact process
62.
________ reagent can be
used to identify
Cu2+
ion.
a) Nitric acid b) Sulphuric acid
c) Sodium hydroxide d) Potassium dichromate
63.
_______ is the important
ore of copper.
a) Malachite b)
Bauxite
c)
Blue Vitriol d)
Alumina
64.
Titanium is used as
catalyst in _______
a) Haber process
b) Catalytic hydrogenation
c) Oxidation of ammonia to nitric acid
d) Polymerization of ethyle into polyethylene
65.
An adding KI to a solution
of CuSO4
a) Cupric oxide is precipitated
b) Metallic copper is precipitated
c) Cuprous iodide is precipitated with the liberation of iodine
d) No change takes place
66.
In Cr2O72
every Cr atom is linked to
a) Two O atoms b) Three O atoms
c)
Four O atoms d) Five O atoms
67.
A substance which have even
number of electrons and have paired spin is called
______
a) Ferromagnetic b)
Paramagnetic
c)
Dimagnetic d) None of these
68.
The empty spaces between
atoms of transition
metals
in their crystal lattices are called _____
a) Vacant spaces b)
Valence spaces
c)
Interstices d)
None of these
69.
[Ni(CN)4]2-
is an example of ________
a) Square planar
b) Tetrahedral complexes
c) Octahedral complexes
d) None of these
70.
[Cu(NH3)4]2+
is an example of _______
a) Square planar
b) Tetrahedral complexes
c) Octahedral complexes
d) None of these
71.
[Co(NH3)6]3+
is an example of _______
a) Square planar
b) Tetrahedral complexes
c) Octahedral complexes
d) None of these
72.
The names of ______ are usually
unchanged.
a) Anionic ligands b)
Cationic ligands
c)
Neutral ligands d) None of these
73.
The suffix “ate” at the end
of the name of the coordinate complex ion represents
a/an
______
a) Cation b)
Anion
c)
Cathode b)
Anode
74.
Ferric oxide is _______
a) A basic anhydride
b) An acid anhydride
c) An amphoteric anhydride
d) Green in colour
75.
The most strongly
ferromagnetic element is
_______
a) Fe b)
Co
c)
Ni d)
Os
76.
The property of a substance
which permits it
being
drawn into wire is called ________
a) Softness b)
Ductility
c)
Brittleness d)
Hardness
77.
When potassium permanganate
is added to a saturated aqueous solution of potassium hydroxide,
_______ gas is evolved.
a) Hydrogen b)
Oxygen
c)
Carbon dioxide d) None of these
78.
AgCl dissolves in u
solution of NH3 but not in
water because;
a)
NH3 is a better
solvent than H2O
+
b)
Ag forms a complex ion with
NH3
c)
NH3 is a
stronger base than H2O
d)
Dipole moment of water is
higher than NH3
79.
Which of the following is
deliquescent?
a)
ZnCl2 b)
Hg2Cl2
c)
HdCl2 d)
HgCl2
80.
CrO3 dissolves in aqueous
NaOH to give
a)
CrO42 b) Cr(OH)2
c)
Cr2O72 d) Cr(OH)3
81.
Iron obtained from the
blast furnace is called
a)
Pig iron b)
Cast iron
c)
Wrought iron d) Steel
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