Question # 1

Property of transition element is :

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Low m.p and b.p

Parramagnetism

Oxidation state

Low binding energies

Rusting of iron is catalysed by

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Fe

O₂

Zn

H⁺

5-d series is in the period :

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4th

5th

6th

7th

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

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It less reactive than copper

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

Which is the correct electronic configuration of Cr - 24

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1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁴, 4s²

1s², 2s², 2p⁶, 3s², 3p⁶, 3d³, 4s², 4p¹

1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁵, 4s¹

1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁵, 4p¹

Transition elements are called so because:

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Form interstital sompounds

have high m.p

In between 's' and' 'p' block elements

All of these

The number of unpaired electrons in Fe³⁺(Z = 26) are

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5

6

3

4

Which of the following is a carbonate are?

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Pyrolusite

Malchite

Diaspore

cassiterite

What are alloys

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A homogenous mixture of two or more elements

A homohenous mixture of metal and a non-metal

A homogenous mixture of two or more metals

None of the above

AgCl is soluble is

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Aqua regia

H₂SO₄

HCl

NH₃

A transition element is defined as an element of 3d series

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Which is metal

Which has one stable ion

Which has two stable ions

Which has at least one stable ion with incomplete d-orbital

d-block elements are also called :

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alkali metal

Alkaline earth metals

Transition elements

Electron deficient elements

Bell metal is an alloy of Sn and

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Copper

Iron

Zinc

Magnesium

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

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10

14

28

30

Most common oxidation states shownby cerium are

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+2, +4

+3, +4

+3, +5

+2, +3

The total number of rare earth elements is

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8

32

14

10

Potassium chromate has formula

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KClO₃

K₂CO₃

K₂CrO₄

K₂Cr₂O₇

Group VIB of transition elements contains

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Zn, Cd, Hg

Fe, Ru, Os

Cr, Mo, W

Mn, Te, Re

[Cu[NH₃)₄]⁺²will form ______ structure

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Square planar

Tetrahedral

Octahedral

Trigonal bipyramidal

Sodium thisoulophate is used in photography because of its

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Oxidizing behaviour

Reducing behaviour

Complexing behaviour

Photochemical behaviour

The protection of steel by chrome plating is due to

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Cathodic protection

Anodic protection

Covering of steel surface

Formation of alloy with iron

Which is the formula of tetra-ammine chloro-nitro platinum (IV) sulphate

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[Pt(NH₃)₄(NO₂)] SO₄

[Pt NO₂CI(NH₃)₄] SO₄

[Pt CI(NO₂) (NH₃)₄] SO₄

[Pt (NH₃)₄(NO₂) CI] SO₄

In the electronic configuration of Cr one electron from 4s sub-shell is transfered to 3d sub-shell because

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The 3rd orbital is of lower energy than 4s

The 4s orbital is of equal energy to 3d orbital

The half filled d-subshell is more stable than incomplete d-sub shell

6 unpaired electrons make Cr more paramagnetic

The iron obtained from blast furnace is

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Pig iron

Wrought ion

Soft ion

Steel

German silver does not contain

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Cu

Zn

Ni

Mn

Stainless steel contains Cr upto

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12%

18%

10%

5%

In an ooctahedral crystal field splitting, the number of orbitals pushed down in energy is

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3

2

5

Zero

f-block elements are called :

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Alkali metal

Alkakline earth metals

Transition elements

Electron deficient elements

Which of the following d-block elements can show the highest oxidation number in its compounds

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Chromium

Copper

Nickel

Manganese

Platinum (IV) chloride combines with ammonia to form compounds in which the coordination number of the platinum is 6. A formula unit on one of the compound contains a cation and only two chloride ions. What is the formula of this compound

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Pt(NH₃)₆CI₄

Pt(NH₃)₅CI₄

Pt(NH₃)₄CI₄

Pt(NH₃)₃CI₄

The colour of transition metal complexes is due to

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d-d transitions of electrons

Para magnetic nature of transition elements

Ionization

Loss of s-electrons

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ECAT Chemistry Chapter 17 Transition Elements Online Test MCQs With Answers

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