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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. Which element belong to 5d series?

2. Cuprous ore among the following is

Chalcopyrites

Cuprite

Azurite

Malachite

3. The transitional elements

Show variable oxidation

Undergo inert pair effect

Do not form alloys

Show diamagnetism

4. Bell metal is an alloy of

Cu, Zn, and Sn

Cu and Sn

Cu, Zn and Ni

Cu and Zn

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

6. Cr₂O₃ is obtained by heating at red heat

K₂CrO₇

PbCrO₄

ZnCrO₄

K₂CrO₄

7. Group VIB of transition elements contains

Cr Mo W

Zn Cd Hg

Mn Te Re

Fe Ru Os

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

Tetrahedral

Octahedral

Trigonal bipyramidal

Square pyramidal

9. Stainless steel contains iron and carbon along with

Ni and Cr

Mn and Ni

Co and Mn

Cr and Co

10. Transition elements are

Good conductors

Bad conductors

None of these

Insulation

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

They do not exhibit variable valency

Their compounds are generally coloured

They can for ionic or covalent compounds

Their melting and boiling points are high

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

Block of the element

Binding energies

Physical state of element

Number of electrons in valence

13. Rusting of iron is catalyzed by

O₂

H⁺

14. The compounds with non-stoichiometric composition are called

Mixed compounds

Mixtures

Mixed elements

Interstitial compounds

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

NO₂

N₂O

None of these

16. German silver does not contain

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

18. The total number of d – block elements is

110

630

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

Neutral

None of these

Anionic

Cationic

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

Neutral oxide

Amphoteric oxide

Basic oxide

Acidic oxide

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

f-block elements

s-block elements

p-block elements

d-block elements

22. Chromium is extracted generally from

Chrometite

Chrome ochre

Crocoite

Chromite ore

23. Acidified KMnO₄ is decolorized by

Bleaching powder

Mohr’s salt

White vitrol

Microcosmic salt

24. Color of silver iodide is

White

Deep yellow

Pink

Blue

25. F-block elements are called as

Normal elements

Inner transition elements

Transition elements

Typical series

Page 2 of 5

26. Which of the following is not an element?

Rhombic sulphur

Graphite

Diamond

22-Carat gold

27. Transition metals mostly are

Both diamagnetic and paramagnetic

Paramagnetic

Neither diamagnetic nor paramagnetic

Diamagnetic

28. Ni belongs to which series of transition elements

First

Fourth

Second

Third

29. Which element belongs to 4d series?

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

3d⁴, 4S²

3d², 4S²P²

3d⁶, 4S⁰

3d⁵, 4S¹

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

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

Trigonal

Octahedral

Tetrahedral

Hexagonal

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

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

35. Transition metal ion give colour due to

charge transfer

s – p transition

p – p transition

d – d transition

36. The total number of rare earth elements is

37. Transition elements are

None of these

Which have partially filled d and f subshell

Which have complete d and f subshell

Which have half-filled d and f subshell

38. The iron obtained from blast furnace is

Steel

Wrought ion

Pig iron

Soft iron

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

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

41. Melting in presence of coke and silica is called

Roasting

Caking

Smelting

Cooking

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

Fe²⁺

Ni³⁺

Cu⁺

43. 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

A layer of sulphates is deposited on it

All valence electrons of iron are consumed

It is less reactive than copper

44. Which one has highest paramagnetic property?

45. Which of the following is a carbonate are?

Diaspore

Pyrolusite

Cassiterite

Malchite

46. What is wrong about transition metals?

Shows variable oxidation state

Paramagnetic

Diamagnetic

Form complexes

47. The electronic configuration of lanthanides is

[Xe]4f⁰¯¹⁴5d⁰¯¹ 6s²

None of these

[Xe]4f⁰¯¹⁴5d⁰ 6s²

[Xe]4f⁰¹¯⁴5d⁰¯¹ 6s¹

48. Which one shows highest number of oxidation states?

49. Transition metals show maximum oxidation no of:

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

6d subshell

5f subshell

5s subshell

4f subshell

Page 3 of 5

51. The number of unpaired electrons in Mn²⁺ is

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

HClO₄

A greenish yellow gas

MnO₂

A red liquid

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

-4

Zero

54. Choose the correct answer of transition elements?

Transition elements exhibit inert pair effect

Transition elements have low melting points

Transition elements do not have catalytic activity

Transition elements exhibit variable oxidation states

55. 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

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

Wrought iron > steel > cast iron

Cast iron = steel > wrought iron

Cast iron > wrought iron > steel

Cast iron > steel > wrought iron

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

58. The highest percentage of C is in

Steel

All have same percentage

Pig iron

Wrought ion

59. Misch mental is

A mixture of chromium and lead chromate

An alloy of copper

An alloy of lanthanoid metals

An alloy of Aluminum

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

M/5

M/3

M/2

61. Sodium thiosulphate is used in photography because of its

Reducing behavior

Complexing behavior

Photochemical behavior

Oxidizing behavior

62. The location of transition elements is in between

S and P block elements

D and F block elements

Lanthanides & actinides

Chalcogens and halogens

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

CaSiO₃

FeSiO₃

MgSiO₃

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

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

Any of the above

66. Which has the largest radius?

CO³⁺

Mn³⁺

Cr³⁺

Fe³⁺

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

d – orbital

f – orbital

s – orbital

p – orbital

68. Stainless steel contains

18% Ni

8% nickel

Ni is not present is steel

28% Ni

69. Ethylene diamine is

Mono dentate legend

Bidentate

It is Lewis acid

Polydetate ligand

70. The colour transition metal complexes is due to

d-d transition of electrons

Paramagnetic nature of transition elements

Ionization

Loss of S-electrons

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

Zn²⁺

V²⁺

Cr²⁺

Ti²⁺

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

Iron has lee 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

Copper has less affinity for oxygen than sulphur at high temperature

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

Transition elements

Inner transition elements

Typical transition elements

Outer transition elements

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

Titanium

Zinc

Copper

Iron

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

Cathodic protection

Formation of alloy with iron

Covering of steel surface

Anodic protection

Page 4 of 5

76. Radii of transition element

Increase from left to right

Firstly decreases then increase at the end

Decrease from left to right

First increase then decrease

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

Reduction of Fe

Reduction of Cu²⁺

Oxidation of Cu²⁺

Reduction of Fe³⁺

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

A acidic medium

A neutral medium

A basic medium

It does not exist

79. The total number of transition elements is

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

[Ag (NH₃)₂]OH

[Ag (NH₄)₂]Cl

[Ag (NH₃)₂]Cl

[Ag (NH₄)₄]Cl

81. A common ore of manganese is

Magnetise

Pyrolusite

Bauxite

Cassiterite

82. Most common oxidation states shown by cerium are

+3, +5

+2, +4

+3, +4

+2, +3

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

Cu³⁺

Zn²⁺

Ti³⁺

Sc³⁺

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

A basic medium

An acid medium

A neutral medium

Both acidic and basic media

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

Zero

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

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

To make it negatively charged

Reduction of negative

Developing the negative

To make it negatively

88. The lanthanides contraction is responsible for the fact that

Zr and Y have about the same radius

Zr and Hf have about the same radius

Zr and Nb have similar oxidsation state

Zr and Zn have the same oxidation state

89. Group IB of transition elements contain

f-black elements

Coinage metals

Noble gases

Most reactive metals

90. High purity copper metal is obtained by

Electrolytic reduction

Thermite reduction

Carbon reduction

Hydrogen reduction

91. The number of elements belong to lanthanides are

92. The impurities associated with ores are called

Copper

Flux

Slag

Gangue

93. Cathodic protection of iron involves the use of

Copper

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

+ 3

+ 4

+ i

+ 2

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

96. The compound which gives oxygen on moderate heating is

Mercuric oxide

Aluminum oxide

Zinc oxide

Ferric oxide

97. Co – ordination no silver is

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

99. Most transition elements show

Ferromagnetic behavior

Paramagnetic behavior

None of these

Diamagnetic behavior

100. Bronze is an alloy of

None of these

90% Sn + 10% Cu

90% Cu + 10% Sn

90% Cu + 10% Fe

Page 5 of 5

101. Most transition elements show oxidation state

Constant

None

Only one

Variable

102. Turnbull’s blue is a compound called?

Ferrous ferricyanide

Ferrous cyanide

Ferricyanide

Ferri -Ferro cyanide

103. Stability is associated with when

d³

d¹

d⁵

d⁴

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

Geometry of complex

co – ordination number

Central metal ion

Ligand

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

High atomic weight

Very high ionization energy and weak metallic bond

Low ionization potential

High vapour pressure

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

Mercurous chloride

Mercuric oxide

Mercurous oxide

Mercuric chloride

107. In transition metal complex metal action acts as

Bronsted base

Lewis acid

None of these

Bronsted acid

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

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

To remove odour

To inhibit corrosion

To increase remove foreign particle

To prevent scale formation

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

111. The purest form of iron is

Cast iron

Wrought iron

Magnetite

Hamaetite

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

NaBr

K₂CrO₄

NaNO₃

113. Out of 110 known elements transition elements are

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

Unpaired electron

None of these

Incomplete f-orbitals

Paired electron

115. MnO₄ ion has a colour

Pink

Orange

Colourless

Purple

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

117. Bessemer converter is used in the manufacture of

Cast iron

Wrought iron

Steel

Pig iron

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

An oxidizing agent

A reducing agent

Slag

Flux

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

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

First increases and then decreases

Decreases

Increases

First decreases and then increases

121. Salts of __________ are colorless

Zinc

Copper

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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

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