Question # 1

Bell metal is an alloy of Sn and

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Copper

Iron

Zinc

Magnesium

Cuprous ore among the following is

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Chalcopyites

Azurite

Cuprite

Malachitre

d-block elements are also called :

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alkali metal

Alkaline earth metals

Transition elements

Electron deficient elements

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

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Central metal ion

Coordination number

Ligand

Geometry of complex

Which has the largest radius?

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CO³⁺

Mn³⁺

Fe³⁺

Cr³⁺

Which of the following is not an element?

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Graphite

Diamond

22-Carat gold

Rhombic sulphur

Stainless steel contains Cr upto

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12%

18%

10%

5%

The total number of rare earth elements is

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8

32

14

10

Bell metal is an alloy of

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Cu, Zn, and Sn

Cu, Zn and Ni

Cu and Zn

Cu and Sn

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

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Square planar

Tetrahedral

Octahedral

Trigonal bipyramidal

What is wrong about transition metals?

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Diamagnetic

Paramagnetic

Form complexes

Shows variable oxidation state

Potassium hexacyanoferrate (II) has the formula

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K₄[Fe(CN)₆]

K₃[Fe(CN)₆]

K₂[Fe(CN)₆]

K [Fe(CN)₆]

Which of the following compounds gives red precipitate with AgNO₃?

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Kl

K₂CrO₄

NaBr

NaNO₃

Series starting from57La,42Hf -80Hg is in the period:

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4th

5th

6th

7th

Which of the following element is responsible for oxidation of water to O₂in biological process?

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Fe

Mn

Cu

Mo

Which of the following is not related to transition metals

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They have a high tensile strength

They are ductile

They are malleable

They have low melting points

Which of the following is a carbonate are?

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Pyrolusite

Malchite

Diaspore

cassiterite

Most transition elements show

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Diamagnetic behavior

Ferromagnetic behavior

Paramagnetic behavior

None of these

Which is the formula of tetra-ammine chloronitro platinum (VI) sulphate?

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[Pt(NH₃)₄(NO₂)]SO₄

[PtNO₂Cl(NH₃)₄]SO₄

[PtCl(NO₂)(NH₃)₄]SO₄

[Pt(NH₃)₄(NO₂)Cl]SO₄

Which of the following is a non-typical transition elements

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Cr

Mn

Zn

Fe

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

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3

2

5

Zero

The total number of transition elements is:

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10

14

40

50

Which one of the following has highest density

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Zn

Os

Ni

Cu

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

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24

23

22

21

In the extraction of iron, slag is produced which is

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CO

FeSiO₃

MgSiO₃

CaSiO₃

Most common oxidation states shownby cerium are

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+2, +4

+3, +4

+3, +5

+2, +3

Which element does not belong to 4d series

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Y

Zr

Mo

Zn

The free spaces between the metal atoms and its crystal lattice are called

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Valance spaces

Empty spaces

Interstices

None

Misch mental is

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An alloy of Aluminium

A mixture of chromium and lead chromate

An alloy of lanthanoid metals

An alloy of copper

E.D.T.A is

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Mono-dentate

Bi-dentate

Polydentate

Having three lone pairs of electrons

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