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

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

Ti³⁺

Sc³⁺

Zn²⁺

Cu³⁺

3. German silver does not contain

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

Ti²⁺

Cr²⁺

Zn²⁺

V²⁺

5. The transitional elements

Show diamagnetism

Show variable oxidation

Do not form alloys

Undergo inert pair effect

6. Which one has highest paramagnetic property?

7. 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

8. Which has the largest radius?

Mn³⁺

Cr³⁺

Fe³⁺

CO³⁺

9. Bronze is an alloy of

None of these

90% Cu + 10% Sn

90% Cu + 10% Fe

90% Sn + 10% Cu

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

Tetrahedral

Hexagonal

Trigonal

Octahedral

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

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

3d⁴, 4S²

3d⁶, 4S⁰

3d², 4S²P²

3d⁵, 4S¹

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

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

To increase remove foreign particle

To inhibit corrosion

To prevent scale formation

To remove odour

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

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

Both acidic and basic media

An acid medium

A basic medium

A neutral medium

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

18. Misch mental is

An alloy of copper

An alloy of Aluminum

An alloy of lanthanoid metals

A mixture of chromium and lead chromate

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

HClO₄

A greenish yellow gas

MnO₂

A red liquid

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

21. Which element belong to 5d series?

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

Physical state of element

Block of the element

Number of electrons in valence

Binding energies

23. Stability is associated with when

d⁴

d¹

d⁵

d³

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

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

Neutral oxide

Basic oxide

Acidic oxide

Amphoteric oxide

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26. Most transition elements show

Diamagnetic behavior

Paramagnetic behavior

Ferromagnetic behavior

None of these

27. Stainless steel contains

28% Ni

8% nickel

Ni is not present is steel

18% Ni

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

29. Acidified KMnO₄ is decolorized by

Mohr’s salt

Bleaching powder

White vitrol

Microcosmic salt

30. Out of 110 known elements transition elements are

31. Transition elements are

Good conductors

Bad conductors

None of these

Insulation

32. 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

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

d – orbital

f – orbital

p – orbital

s – orbital

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

None of these

NO₂

N₂O

35. Which of the following is a carbonate are?

Cassiterite

Pyrolusite

Malchite

Diaspore

36. Group IB of transition elements contain

Most reactive metals

Coinage metals

f-black elements

Noble gases

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

38. The purest form of iron is

Wrought iron

Magnetite

Hamaetite

Cast iron

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

Inner transition elements

Transition elements

Outer transition elements

Typical transition elements

40. Cathodic protection of iron involves the use of

Copper

41. The compounds with non-stoichiometric composition are called

Mixed compounds

Mixed elements

Mixtures

Interstitial compounds

42. Transition metals mostly are

Paramagnetic

Both diamagnetic and paramagnetic

Neither diamagnetic nor paramagnetic

Diamagnetic

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

Very high ionization energy and weak metallic bond

Low ionization potential

High vapour pressure

High atomic weight

44. Salts of __________ are colorless

Copper

Zinc

45. The iron obtained from blast furnace is

Pig iron

Soft iron

Wrought ion

Steel

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

Reduction of Cu²⁺

Reduction of Fe³⁺

Oxidation of Cu²⁺

Reduction of Fe

47. 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

48. Which one shows highest number of oxidation states?

49. In transition metal complex metal action acts as

Bronsted acid

Bronsted base

Lewis acid

None of these

50. Melting in presence of coke and silica is called

Smelting

Cooking

Roasting

Caking

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

Titanium

Copper

Iron

Zinc

52. F-block elements are called as

Inner transition elements

Typical series

Transition elements

Normal elements

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

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

A layer of sulphates is deposited on it

An inert layer of iron oxide is deposited on it

All valence electrons of iron are consumed

It is less reactive than copper

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

56. Cr₂O₃ is obtained by heating at red heat

PbCrO₄

K₂CrO₇

ZnCrO₄

K₂CrO₄

57. The total number of rare earth elements is

58. 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

Copper has less affinity for oxygen than sulphur at high temperature

Sulphur has less affinity for oxygen at high temperature

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

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

Formation of alloy with iron

Anodic protection

Cathodic protection

Covering of steel surface

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

co – ordination number

Ligand

Central metal ion

Geometry of complex

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

Decreases

First increases and then decreases

Increases

First decreases and then increases

63. Stainless steel contains iron and carbon along with

Ni and Cr

Mn and Ni

Cr and Co

Co and Mn

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

Trigonal bipyramidal

Tetrahedral

Octahedral

Square pyramidal

65. Most common oxidation states shown by cerium are

+3, +5

+2, +3

+2, +4

+3, +4

66. Bessemer converter is used in the manufacture of

Steel

Cast iron

Wrought iron

Pig iron

67. The colour transition metal complexes is due to

Loss of S-electrons

Paramagnetic nature of transition elements

Ionization

d-d transition of electrons

68. Choose the correct answer of transition elements?

Transition elements exhibit variable oxidation states

Transition elements do not have catalytic activity

Transition elements have low melting points

Transition elements exhibit inert pair effect

69. Ethylene diamine is

Polydetate ligand

Mono dentate legend

Bidentate

It is Lewis acid

70. Co – ordination no silver is

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

[Ag (NH₄)₂]Cl

[Ag (NH₄)₄]Cl

[Ag (NH₃)₂]Cl

[Ag (NH₃)₂]OH

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

Anionic

Neutral

None of these

Cationic

73. The electronic configuration of lanthanides is

[Xe]4f⁰¹¯⁴5d⁰¯¹ 6s¹

[Xe]4f⁰¯¹⁴5d⁰¯¹ 6s²

[Xe]4f⁰¯¹⁴5d⁰ 6s²

None of these

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

MgSiO₃

CaSiO₃

FeSiO₃

75. Transition metals show maximum oxidation no of:

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76. The total number of transition elements is

77. High purity copper metal is obtained by

Hydrogen reduction

Carbon reduction

Thermite reduction

Electrolytic reduction

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

79. The impurities associated with ores are called

Gangue

Flux

Copper

Slag

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

Zero

81. Which element belongs to 4d series?

82. The total number of d – block elements is

110

630

83. Color of silver iodide is

White

Blue

Deep yellow

Pink

84. The number of unpaired electrons in Mn²⁺ is

85. The highest percentage of C is in

All have same percentage

Pig iron

Steel

Wrought ion

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

Fe²⁺

Ni³⁺

Cu⁺

87. Chromium is extracted generally from

Crocoite

Chrometite

Chromite ore

Chrome ochre

88. Which of the following is not an element?

Graphite

22-Carat gold

Diamond

Rhombic sulphur

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

5f subshell

4f subshell

6d subshell

5s subshell

90. Transition metal ion give colour due to

p – p transition

s – p transition

charge transfer

d – d transition

91. Group VIB of transition elements contains

Mn Te Re

Zn Cd Hg

Fe Ru Os

Cr Mo W

92. MnO₄ ion has a colour

Purple

Orange

Colourless

Pink

93. Bell metal is an alloy of

Cu and Zn

Cu, Zn, and Sn

Cu and Sn

Cu, Zn and Ni

94. Turnbull’s blue is a compound called?

Ferrous ferricyanide

Ferrous cyanide

Ferricyanide

Ferri -Ferro cyanide

95. Rusting of iron is catalyzed by

H⁺

O₂

96. Radii of transition element

Firstly decreases then increase at the end

First increase then decrease

Decrease from left to right

Increase from left to right

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

Any of the above

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

None of these

Unpaired electron

Incomplete f-orbitals

Paired electron

99. The compound which gives oxygen on moderate heating is

Mercuric oxide

Ferric oxide

Aluminum oxide

Zinc oxide

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

Page 5 of 5

101. Sodium thiosulphate is used in photography because of its

Complexing behavior

Reducing behavior

Photochemical behavior

Oxidizing behavior

102. A common ore of manganese is

Magnetise

Bauxite

Pyrolusite

Cassiterite

103. Most transition elements show oxidation state

None

Variable

Constant

Only one

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

+ 2

+ 3

+ i

+ 4

105. The location of transition elements is in between

Lanthanides & actinides

S and P block elements

Chalcogens and halogens

D and F block elements

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

Slag

An oxidizing agent

A reducing agent

Flux

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

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

A neutral medium

A acidic medium

It does not exist

A basic medium

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

K₂CrO₄

NaNO₃

NaBr

110. Ni belongs to which series of transition elements

Third

First

Fourth

Second

111. Cuprous ore among the following is

Cuprite

Malachite

Azurite

Chalcopyrites

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

Zero

-4

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

Mercurous oxide

Mercurous chloride

Mercuric chloride

Mercuric oxide

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

Developing the negative

To make it negatively charged

To make it negatively

Reduction of negative

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

f-block elements

d-block elements

p-block elements

s-block elements

116. What is wrong about transition metals?

Form complexes

Diamagnetic

Paramagnetic

Shows variable oxidation state

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

118. O₂ can be obtained from solid KMnO₄ by

Dissolving the solid in dil HCl

Strongly heating the solid

Dissolving the solid in dil H₂SO₄

Treating with H₂

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

Cast iron > wrought iron > steel

Cast iron > steel > wrought iron

Wrought iron > steel > cast iron

Cast iron = steel > wrought iron

120. The number of elements belong to lanthanides are

121. Transition elements are

Which have partially filled d and f subshell

None of these

Which have half-filled d and f subshell

Which have complete d and f subshell

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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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