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

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

Geometry of complex

Central metal ion

Ligand

co – ordination number

3. The compounds with non-stoichiometric composition are called

Mixed compounds

Interstitial compounds

Mixtures

Mixed elements

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

Their melting and boiling points are high

They do not exhibit variable valency

Their compounds are generally coloured

They can for ionic or covalent compounds

5. Bell metal is an alloy of

Cu and Sn

Cu, Zn, and Sn

Cu and Zn

Cu, Zn and Ni

6. In transition metal complex metal action acts as

None of these

Bronsted acid

Lewis acid

Bronsted base

7. Color of silver iodide is

Deep yellow

Pink

Blue

White

8. The number of unpaired electrons in Mn²⁺ is

9. Bessemer converter is used in the manufacture of

Pig iron

Steel

Cast iron

Wrought iron

10. The electronic configuration of lanthanides is

[Xe]4f⁰¯¹⁴5d⁰¯¹ 6s²

[Xe]4f⁰¯¹⁴5d⁰ 6s²

None of these

[Xe]4f⁰¹¯⁴5d⁰¯¹ 6s¹

11. The total number of rare earth elements is

12. Melting in presence of coke and silica is called

Cooking

Roasting

Caking

Smelting

13. F-block elements are called as

Typical series

Normal elements

Transition elements

Inner transition elements

14. The transitional elements

Do not form alloys

Undergo inert pair effect

Show diamagnetism

Show variable oxidation

15. Which one shows highest number of oxidation states?

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

Formation of alloy with iron

Anodic protection

Covering of steel surface

Cathodic protection

17. The total number of d – block elements is

110

630

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

19. Which element belongs to 4d series?

20. Transition metals show maximum oxidation no of:

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

Flux

An oxidizing agent

Slag

A reducing agent

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

All valence electrons of iron are consumed

A layer of sulphates is deposited on it

It is less reactive than copper

An inert layer of iron oxide is deposited on it

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

s-block elements

f-block elements

d-block elements

p-block elements

24. The lanthanides contraction is responsible for the fact that

Zr and Zn have the same oxidation state

Zr and Nb have similar oxidsation state

Zr and Hf have about the same radius

Zr and Y have about the same radius

25. Stainless steel contains iron and carbon along with

Ni and Cr

Mn and Ni

Co and Mn

Cr and Co

Page 2 of 5

26. The total number of transition elements is

27. Ni belongs to which series of transition elements

Second

First

Third

Fourth

28. Salts of __________ are colorless

Copper

Zinc

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

d – orbital

s – orbital

p – orbital

f – orbital

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

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

Inner transition elements

Outer transition elements

Transition elements

Typical transition elements

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

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

Decreases

First increases and then decreases

First decreases and then increases

Increases

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

A red liquid

A greenish yellow gas

HClO₄

MnO₂

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

[Ag (NH₃)₂]OH

[Ag (NH₃)₂]Cl

[Ag (NH₄)₄]Cl

[Ag (NH₄)₂]Cl

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

Zinc

Titanium

Iron

Copper

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

38. Chromium is extracted generally from

Chrometite

Chromite ore

Chrome ochre

Crocoite

39. The colour transition metal complexes is due to

Ionization

Paramagnetic nature of transition elements

Loss of S-electrons

d-d transition of electrons

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

Zero

41. Which element belong to 5d series?

42. What is wrong about transition metals?

Form complexes

Diamagnetic

Shows variable oxidation state

Paramagnetic

43. The impurities associated with ores are called

Slag

Copper

Gangue

Flux

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

V²⁺

Ti²⁺

Cr²⁺

Zn²⁺

45. Bronze is an alloy of

90% Cu + 10% Sn

90% Sn + 10% Cu

90% Cu + 10% Fe

None of these

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

Incomplete f-orbitals

None of these

Paired electron

Unpaired electron

47. Stability is associated with when

d¹

d⁵

d⁴

d³

48. Choose the correct answer of transition elements?

Transition elements exhibit inert pair effect

Transition elements do not have catalytic activity

Transition elements exhibit variable oxidation states

Transition elements have low melting points

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

A basic medium

A neutral medium

An acid medium

Both acidic and basic media

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

Page 3 of 5

51. Out of 110 known elements transition elements are

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

NaBr

NaNO₃

K₂CrO₄

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

54. 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

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

4f subshell

5s subshell

5f subshell

6d subshell

56. Rusting of iron is catalyzed by

H⁺

O₂

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

Ti³⁺

Zn²⁺

Sc³⁺

Cu³⁺

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

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

60. Most transition elements show oxidation state

Constant

None

Variable

Only one

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

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

+ 4

+ 3

+ i

+ 2

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

To make it negatively charged

To make it negatively

Reduction of negative

Developing the negative

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

Mercuric oxide

Mercurous chloride

Mercuric chloride

Mercurous oxide

65. Cr₂O₃ is obtained by heating at red heat

K₂CrO₇

ZnCrO₄

K₂CrO₄

PbCrO₄

66. The iron obtained from blast furnace is

Soft iron

Pig iron

Wrought ion

Steel

67. Cuprous ore among the following is

Cuprite

Malachite

Chalcopyrites

Azurite

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

3d⁶, 4S⁰

3d², 4S²P²

3d⁴, 4S²

3d⁵, 4S¹

69. MnO₄ ion has a colour

Orange

Colourless

Purple

Pink

70. Cathodic protection of iron involves the use of

Copper

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

72. Co – ordination no silver is

73. High purity copper metal is obtained by

Electrolytic reduction

Carbon reduction

Thermite reduction

Hydrogen reduction

74. The purest form of iron is

Magnetite

Hamaetite

Wrought iron

Cast iron

75. The number of elements belong to lanthanides are

Page 4 of 5

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

Neutral oxide

Acidic oxide

Basic oxide

Amphoteric oxide

77. The compound which gives oxygen on moderate heating is

Ferric oxide

Aluminum oxide

Mercuric oxide

Zinc oxide

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

Any of the above

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

Cast iron > steel > wrought iron

Cast iron > wrought iron > steel

Wrought iron > steel > cast iron

Cast iron = steel > wrought iron

80. The highest percentage of C is in

Pig iron

All have same percentage

Steel

Wrought ion

81. Turnbull’s blue is a compound called?

Ferricyanide

Ferri -Ferro cyanide

Ferrous ferricyanide

Ferrous cyanide

82. A common ore of manganese is

Cassiterite

Pyrolusite

Magnetise

Bauxite

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

None of these

Cationic

Anionic

Neutral

84. Misch mental is

An alloy of Aluminum

A mixture of chromium and lead chromate

An alloy of lanthanoid metals

An alloy of copper

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

None of these

NO₂

N₂O

86. Transition elements are

None of these

Which have partially filled d and f subshell

Which have half-filled d and f subshell

Which have complete d and f subshell

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

Zero

-4

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

Number of electrons in valence

Physical state of element

Block of the element

Binding energies

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

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

Cu⁺

Fe²⁺

Ni³⁺

91. Radii of transition element

Increase from left to right

First increase then decrease

Firstly decreases then increase at the end

Decrease from left to right

92. Which of the following is a carbonate are?

Diaspore

Cassiterite

Pyrolusite

Malchite

93. Which one has highest paramagnetic property?

94. Sodium thiosulphate is used in photography because of its

Oxidizing behavior

Complexing behavior

Reducing behavior

Photochemical behavior

95. O₂ can be obtained from solid KMnO₄ by

Strongly heating the solid

Dissolving the solid in dil HCl

Treating with H₂

Dissolving the solid in dil H₂SO₄

96. Stainless steel contains

8% nickel

28% Ni

Ni is not present is steel

18% Ni

97. Group IB of transition elements contain

f-black elements

Coinage metals

Noble gases

Most reactive metals

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

99. Most transition elements show

None of these

Ferromagnetic behavior

Paramagnetic behavior

Diamagnetic behavior

100. Most common oxidation states shown by cerium are

+3, +4

+3, +5

+2, +3

+2, +4

Page 5 of 5

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

Tetrahedral

Trigonal

Hexagonal

Octahedral

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

Oxidation of Cu²⁺

Reduction of Fe

Reduction of Cu²⁺

Reduction of Fe³⁺

103. Transition metal ion give colour due to

charge transfer

d – d transition

s – p transition

p – p transition

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

105. Ethylene diamine is

It is Lewis acid

Polydetate ligand

Bidentate

Mono dentate legend

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

Very high ionization energy and weak metallic bond

High vapour pressure

Low ionization potential

High atomic weight

107. German silver does not contain

108. Transition metals mostly are

Neither diamagnetic nor paramagnetic

Diamagnetic

Paramagnetic

Both diamagnetic and paramagnetic

109. The location of transition elements is in between

S and P block elements

Lanthanides & actinides

D and F block elements

Chalcogens and halogens

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

FeSiO₃

CaSiO₃

MgSiO₃

111. Acidified KMnO₄ is decolorized by

Microcosmic salt

Bleaching powder

White vitrol

Mohr’s salt

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

A neutral medium

A basic medium

It does not exist

A acidic medium

113. Which has the largest radius?

Fe³⁺

CO³⁺

Mn³⁺

Cr³⁺

114. Which of the following is not an element?

Graphite

Rhombic sulphur

Diamond

22-Carat gold

115. Transition elements are

Bad conductors

None of these

Good conductors

Insulation

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

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

Octahedral

Square pyramidal

Tetrahedral

Trigonal bipyramidal

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

To increase remove foreign particle

To remove odour

To prevent scale formation

To inhibit corrosion

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

120. Group VIB of transition elements contains

Mn Te Re

Cr Mo W

Zn Cd Hg

Fe Ru Os

121. 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

Sulphur has less affinity for oxygen 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

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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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