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ECAT Chemistry Transition Elements Test Online

Mustansar KhanLast Updated: April 19, 2025

Chemistry Transition Elements MCQS Online Test

ECAT Chemistry Transition Elements Chapter Online Test

Total Questions:	121
Time Allowed:	60 Minutes
Total Marks:	121
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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ECAT Chemistry Transition Elements Test

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Page 1 of 5

Chemistry

1. Transition metal ion give colour due to

charge transfer

d – d transition

s – p transition

p – p transition

2. The outer electronic configuration of an element is 3d⁶, 4s². The element is

3. Bessemer converter is used in the manufacture of

Wrought iron

Cast iron

Pig iron

Steel

4. Which one has highest paramagnetic property?

5. The transitional elements

Show diamagnetism

Do not form alloys

Undergo inert pair effect

Show variable oxidation

6. Transition elements are

Good conductors

Bad conductors

Insulation

None of these

7. Which of the following elements form all colourless compounds?

8. O₂ can be obtained from solid KMnO₄ by

Treating with H₂

Dissolving the solid in dil H₂SO₄

Strongly heating the solid

Dissolving the solid in dil HCl

9. A transition metal complex can be recognized by various terms, which is not the proper term.

Ligand

Geometry of complex

co – ordination number

Central metal ion

10. Group IB of transition elements contain

Most reactive metals

f-black elements

Noble gases

Coinage metals

11. Color of silver iodide is

Deep yellow

Blue

Pink

White

12. Co – ordination no silver is

13. Transition metals mostly are

Diamagnetic

Both diamagnetic and paramagnetic

Paramagnetic

Neither diamagnetic nor paramagnetic

14. The total number of rare earth elements is

15. Turnbull’s blue is a compound called?

Ferrous ferricyanide

Ferrous cyanide

Ferri -Ferro cyanide

Ferricyanide

16. Which of the following metals is sometimes found in native state in nature?

17. German silver does not contain

18. The location of transition elements is in between

S and P block elements

Lanthanides & actinides

Chalcogens and halogens

D and F block elements

19. An element in +3 oxidation state has the electronic configuration (Ar) 3d³. its atomic number is

20. Para magnetism is exhibited by d-block elements due to the presence of

Unpaired electron

Incomplete f-orbitals

None of these

Paired electron

21. In transition metal complex metal action acts as

Bronsted base

Bronsted acid

Lewis acid

None of these

22. All 3d series elements variable oxidation states. The one shown by all 3d elements is

23. Misch mental is

An alloy of Aluminum

An alloy of lanthanoid metals

A mixture of chromium and lead chromate

An alloy of copper

24. What is the charge on the coordination sphere in [Fe(CN₆)]⁴

Zero

-4

25. Which of the following is obtained when Fe reacts with dil. HNO₃?

N₂O

NO₂

None of these

Page 2 of 5

26. Salts of __________ are colorless

Zinc

Copper

27. The colour transition metal complexes is due to

Ionization

Paramagnetic nature of transition elements

Loss of S-electrons

d-d transition of electrons

28. Transition metals from complex due to the participation partially filled

p – orbital

f – orbital

s – orbital

d – orbital

29. In control cooling water system, chromates, phosphates and silicates are added to water

To increase remove foreign particle

To remove odour

To inhibit corrosion

To prevent scale formation

30. How many moles of acidified FeSO₄ solution can be completely oxidized by one mole of KMnO₄?

31. Chromium is extracted generally from

Crocoite

Chrometite

Chrome ochre

Chromite ore

32. Hypo is trade name of sodium thio sulphate. It is used in photography for:

To make it negatively

Reduction of negative

Developing the negative

To make it negatively charged

33. Which of the following is not correct about transition metals?

They do not exhibit variable valency

Their compounds are generally coloured

Their melting and boiling points are high

They can for ionic or covalent compounds

34. Which of the following is not an element?

Rhombic sulphur

Diamond

Graphite

22-Carat gold

35. The electronic configuration of lanthanides is

[Xe]4f⁰¯¹⁴5d⁰¯¹ 6s²

None of these

[Xe]4f⁰¹¯⁴5d⁰¯¹ 6s¹

[Xe]4f⁰¯¹⁴5d⁰ 6s²

36. F-block elements are called as

Transition elements

Typical series

Inner transition elements

Normal elements

37. The protection of steel by chrome plating is due to

Cathodic protection

Covering of steel surface

Anodic protection

Formation of alloy with iron

38. Out of 110 known elements transition elements are

39. When impurities are P and S, then furnace is lined

Amphoteric oxide

Acidic oxide

Basic oxide

Neutral oxide

40. Stainless steel contains

8% nickel

18% Ni

Ni is not present is steel

28% Ni

41. Most transition elements show oxidation state

Variable

Constant

None

Only one

42. Mercury is the only metal which is liquid at 0°C.This is due to its

Low ionization potential

High vapour pressure

Very high ionization energy and weak metallic bond

High atomic weight

43. Acidified KMnO₄ is decolorized by

Microcosmic salt

White vitrol

Mohr’s salt

Bleaching powder

44. The lanthanides contraction is responsible for the fact that

Zr and Zn have the same oxidation state

Zr and Y have about the same radius

Zr and Hf have about the same radius

Zr and Nb have similar oxidsation state

45. In the manufacture of iron from haematite, limestone is added to act as:

Flux

An oxidizing agent

A reducing agent

Slag

46. Cuprous ore among the following is

Azurite

Malachite

Cuprite

Chalcopyrites

47. Across the lanthanide series, the basicity of the lanthanide hydroxides

Decreases

First increases and then decreases

First decreases and then increases

Increases

48. Which of the following metal exhibits more than one oxidation?

49. Which of the following element is responsible for oxidation of water to O₂ in biological process?

50. The expected geometry of the compound containing d²Sp³ hybridization of central metal is

Hexagonal

Octahedral

Trigonal

Tetrahedral

Page 3 of 5

51. Which one of the following metal ions is colourless?

Ti²⁺

V²⁺

Zn²⁺

Cr²⁺

52. Which element belongs to 4d series?

53. The reaction MnO₄ + e ⇌ MnO²¯₄ takes place in

A neutral medium

An acid medium

A basic medium

Both acidic and basic media

54. Which of the following is a carbonate are?

Cassiterite

Malchite

Pyrolusite

Diaspore

55. Cr₂O₃ is obtained by heating at red heat

K₂CrO₇

PbCrO₄

K₂CrO₄

ZnCrO₄

56. Which one shows highest number of oxidation states?

57. The highest percentage of C is in

Wrought ion

All have same percentage

Steel

Pig iron

58. Bronze is an alloy of

None of these

90% Cu + 10% Sn

90% Sn + 10% Cu

90% Cu + 10% Fe

59. Stability is associated with when

d¹

d³

d⁴

d⁵

60. Most common oxidation states shown by cerium are

+3, +5

+3, +4

+2, +4

+2, +3

61. Bell metal is an alloy of

Cu and Sn

Cu and Zn

Cu, Zn and Ni

Cu, Zn, and Sn

62. Transition elements are

Which have complete d and f subshell

Which have partially filled d and f subshell

None of these

Which have half-filled d and f subshell

63. What is the coordination number of platinum in tetraamine chloronitroplatinum (IV) sulphate?

64. AgCl precipitate dissolves in NH₄OH due to the formation of

[Ag (NH₃)₂]OH

[Ag (NH₄)₄]Cl

[Ag (NH₄)₂]Cl

[Ag (NH₃)₂]Cl

65. Which of the following elements does not show variable oxidation states?

Iron

Titanium

Copper

Zinc

66. One of the products of reaction between solid KMnO₄ and Conc. HCl is

A red liquid

A greenish yellow gas

HClO₄

MnO₂

67. Ethylene diamine is

Bidentate

Polydetate ligand

Mono dentate legend

It is Lewis acid

68. Among the lanthandes the one obtained by syntheric method is

69. Non-formation of menisus by Hg in presence of O₃ is due to the formation of

Mercuric oxide

Mercurous oxide

Mercurous chloride

Mercuric chloride

70. Besides Zn and Cu, German silver contains the metal

71. The total number of transition elements is

72. High purity copper metal is obtained by

Hydrogen reduction

Thermite reduction

Electrolytic reduction

Carbon reduction

73. m.p and b.p of transition elements has a direct relation with

Binding energies

Block of the element

Physical state of element

Number of electrons in valence

74. Addition of iron fillings to CuSO₄ solution caused precipitation of Cu owing to the

Reduction of Fe³⁺

Reduction of Cu²⁺

Reduction of Fe

Oxidation of Cu²⁺

75. A common ore of manganese is

Pyrolusite

Magnetise

Cassiterite

Bauxite

Page 4 of 5

76. The number of unpaired electron in ferrous ion (Z = 26) is

77. The elements in which d or f orbitals are in the process of completion are

Transition elements

Typical transition elements

Outer transition elements

Inner transition elements

78. Which one is the electronic configuration of ²⁵M.

3d², 4S²P²

3d⁵, 4S¹

3d⁶, 4S⁰

3d⁴, 4S²

79. Which of the following transition metal ions will have definite value of magnetic moment?

Zn²⁺

Sc³⁺

Ti³⁺

Cu³⁺

80. What is the shape of Fe(CO)₅ molecule?

Tetrahedral

Octahedral

Square pyramidal

Trigonal bipyramidal

81. Radii of transition element

Decrease from left to right

Firstly decreases then increase at the end

First increase then decrease

Increase from left to right

82. Stainless steel contains iron and carbon along with

Ni and Cr

Co and Mn

Cr and Co

Mn and Ni

83. Iron, once dipped in concentrated H₂SO₄, does not displace copper from copper sulphates solution, because

An inert layer of iron oxide is deposited on it

It is less reactive than copper

A layer of sulphates is deposited on it

All valence electrons of iron are consumed

84. Cr₂O²¯₇ ⇌ 2CrO²₄ is shifted to right in

It does not exist

A acidic medium

A basic medium

A neutral medium

85. Which of the following has the maximum number of unpaired d-electrons?

Cu⁺

Fe²⁺

Ni³⁺

86. The number of elements belong to lanthanides are

87. The total number of d – block elements is

630

110

88. The total number of inner transition elements in the periodic table is

89. Copper is extracted from copper pyrites ore by heating in a blast furnace. The method is based on the principle that

Copper has less affinity for oxygen than sulphur at high temperature

Copper has more affinity for oxygen than sulphur at high temperature

Sulphur has less affinity for oxygen at high temperature

Iron has lee affinity for oxygen than sulphur at high temperature

90. The %age of C in different type of iron products is in the order of

Wrought iron > steel > cast iron

Cast iron > wrought iron > steel

Cast iron = steel > wrought iron

Cast iron > steel > wrought iron

91. Group VIB of transition elements contains

Fe Ru Os

Cr Mo W

Zn Cd Hg

Mn Te Re

92. In the extraction of iron, slag is produced which is

MgSiO₃

FeSiO₃

CaSiO₃

93. In an octahedral crystal field splitting, the number of orbitals pushed down in energy is

Zero

94. Potassium ferrocyanide (potassium hexacyano ferrate II) is a/an ________ complex

Anionic

Cationic

None of these

Neutral

95. Which has the largest radius?

Cr³⁺

Mn³⁺

Fe³⁺

CO³⁺

96. The impurities associated with ores are called

Flux

Slag

Copper

Gangue

97. Transition metals show maximum oxidation no of:

98. The compound which gives oxygen on moderate heating is

Ferric oxide

Zinc oxide

Aluminum oxide

Mercuric oxide

99. Which element belong to 5d series?

100. The number of unpaired electrons in Mn²⁺ is

Page 5 of 5

101. Most transition elements show

Ferromagnetic behavior

Paramagnetic behavior

Diamagnetic behavior

None of these

102. The purest form of iron is

Hamaetite

Magnetite

Cast iron

Wrought iron

103. Ni belongs to which series of transition elements

Fourth

Second

First

Third

104. The compounds with non-stoichiometric composition are called

Mixtures

Mixed compounds

Mixed elements

Interstitial compounds

105. The equivalent weight of KMnO₄(formula weight = M) when it is used as an oxidant in neutral medium is

M/3

M/2

M/5

106. Corrosion of iron can be prevented by coating the surface with

Any of the above

107. The number of unpaired electron in Fe²⁺ (Z = 26) are

108. The elements having ionization potential between 6.5 to 10 electron volts are

p-block elements

s-block elements

d-block elements

f-block elements

109. Which of the following a non typical transition metal?

110. MnO₄ ion has a colour

Colourless

Purple

Pink

Orange

111. Sodium thiosulphate is used in photography because of its

Reducing behavior

Oxidizing behavior

Photochemical behavior

Complexing behavior

112. Melting in presence of coke and silica is called

Smelting

Caking

Cooking

Roasting

113. Choose the correct answer of transition elements?

Transition elements do not have catalytic activity

Transition elements exhibit inert pair effect

Transition elements exhibit variable oxidation states

Transition elements have low melting points

114. Lanthanide contraction is due to the entrance of differentiating electron in

5s subshell

6d subshell

5f subshell

4f subshell

115. Of the following elements which does not belong to the lanthanide series

116. Cathodic protection of iron involves the use of

Copper

117. The usual Oxidation state of the elements of lanthanide series is

+ i

+ 4

+ 3

+ 2

118. Which of the following compounds gives red precipitate with AgNO₃?

NaBr

K₂CrO₄

NaNO₃

119. What is wrong about transition metals?

Paramagnetic

Diamagnetic

Shows variable oxidation state

Form complexes

120. The iron obtained from blast furnace is

Wrought ion

Pig iron

Steel

Soft iron

121. Rusting of iron is catalyzed by

H⁺

O₂

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Mustansar KhanLast Updated: April 19, 2025

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ECAT Chemistry Transition Elements Test Online

Chemistry Transition Elements MCQS Online Test

ECAT Chemistry Transition Elements Chapter Online Test

ECAT Chemistry Transition Elements Test

Chemistry

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Chemistry Transition Elements MCQS Online Test

ECAT Chemistry Transition Elements Chapter Online Test

ECAT Chemistry Transition Elements Test

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