Question # 1

Potassium ferrocyanide is a

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Mixed salt

Double salt

Complex salt

Normal salt

Which of the following is a non-typical transition elements

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Cr

Mn

Zn

Fe

Which is not a bidentate ligand

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Potassium chromate has formula

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KClO₃

K₂CO₃

K₂CrO₄

K₂Cr₂O₇

The amount of Ni in stainless steel is

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3%

4%

5%

8%

Which is used to identify Cu²⁺ions

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Nitric acid

Sulfuric acid

NaOH

HCI

The colour of the transition metal compounds is due to

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p-d transition

d-d transition

s-p transition

None of these

Which one of the following metal ions is colourless?

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V²⁺

Cr³⁺

Zn²⁺

Ti³⁺

Which of the following is a not typical transition element

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Cr

Mn

Zn

Fe

Turnbull's blue is a compound called?

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Ferricyanide

Ferrous ferricyanide

Ferrous cyanide

Ferri - Ferro cyanide

The iron obtained from blast furnace is

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Pig iron

Wrought ion

Soft ion

Steel

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

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4th

5th

6th

7th

The colour of a transition metal complex is due to d-d transition The colour of the complex is the complementary of the colour absorbed. Thus [Ti(H₂O₆]³⁺abosrbs yellow light and transmits blue and red colours therefore the solution of titanium complex appears

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Blue

Red

Yellow

Mixture of blue and red or violet

[Co(NH₃)₆]³⁺will form ______ structure

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Square planar

Tetrahedral

Octahedral

Trigonal bipyamidal

Titanium is used as a catalyst in

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Hydrogenation

Dehydrogenation

Polymerization of P.E.

Oxidation of ammonia

Which of the following metal exhibits more than one oxidation?

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Na

Mg

Fe

Al

Which one of the following has highest density

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Zn

Os

Ni

Cu

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 in differnet phase form other metals

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Ni

Hg

Cd

Na

Which element belong to 5d series

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V

Nb

Pd

Hf

High purity copper metal is obtained by

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Carbon reduction

Hydrogen reduction

Electrolytic reduction

Thermite reduction

The color of Cr³⁺ion is

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Violet

Blue

Pink

Green

The Mn³⁺has ______ color

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Violet

Green

Red/brown

No color

Which of the following is not an element?

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Graphite

Diamond

22-Carat gold

Rhombic sulphur

Rusting can be avoided by :

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Making alloys

Tin or Zinc plating

Use of enamel

All of these

Which has the largest radius?

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CO³⁺

Mn³⁺

Fe³⁺

Cr³⁺

Bronze is an alloy which contains

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60% cu

70% cu

80% cu

99% cu

Which period starts from ₁₁Sc to ₃₀Zn ?

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First Period

Second Period

Third Period

4th Period

Addition of iron fillings to CuSO₄solution caused precipitation of Cu owing to the

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Reduction of Cu²⁺

Oxidation of Cu²⁺

Reduction of Fe

Reduction of Fe³⁺

Corrosion of iron can be prevented by coating the surface with

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Zn

Sn

Ni

Any of the above

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

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3

2

5

Zero

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