Question # 1

The total number of d-bock transition element is

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10

14

40

30

3-d series elements are present in:

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First period

Second Period

Third period

4th period

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

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Se³⁺

Ti³⁺

Cu⁺

Zn²⁺

Which element has 4 unpaired electrons in 3d-orbital

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Chromium - 24

Manganese - 25

Iron - 26

Cobalt - 27

AgCl is soluble is

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Aqua regia

H₂SO₄

HCl

NH₃

Among the lanthandes the one obtained by synthetic method is

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Lu

Pm

Pr

Gd

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

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Zn

Fe²⁺

Ni³⁺

Cu⁺

Which of the following is a transition element

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Sr

Sn

Cr

Pb

The geometrical shape of a transition complexion is related to the state of hybridizing of the central atom. What is trigonal bipyramidal

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sp³

dsp²

dsp³

d²sp³

The total number of transition elements is:

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10

14

40

50

Elements in which f-orbitals are in the process of completion are called

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Outer transition element

Inner transition elements

Non-tranistion elements

Radioactive elements

The amount of Ni in stainless steel is

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3%

4%

5%

8%

Choose the correct answer of transition elements?

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Transition elements have low melting points

Transition elements do not have catalytic activity

Transition elements exhibit variable oxidation states

Transition elements exhibit inert pair effect

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

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Fe

Mn

Cu

Mo

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 total number of transition elements is

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10

14

40

50

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

The elements in which d or f-orbitals are incomplete are called

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Transition elements

Typical elements

Actinides

lanthanides

Fe⁺³and Mn²⁺are strong paramagnetic because the number of unpaired electrons in each is

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4

5

6

7

German silver does not contain

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Cu

Zn

Ni

Mn

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

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10

14

28

30

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

Content of carbon in steel is:

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0.12 to 0.25%

0.25% to 2.5%

3.0 to 3.5%

4.0 to 4.5%

Which of the following is a non-typical transition elements

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Cr

Mn

Zn

Fe

In the manufacture of iron from haematitie,limestone is added to act as

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Flux

A reducing agent

Slag

An oxidizing agent

The percentage of carbon in different types of iron products is in the order of

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Cast iron > wrought iron > steel

Wrought iron > steel > cast iron

Cast iron > steel > wrought iron

Cast iron = steel > wrought iron

The number of unpaired electrons in Mn²⁺is

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5

4

3

2

5-d series is in the period :

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4th

5th

6th

7th

Turnbull's blue is a compound called?

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Ferricyanide

Ferrous ferricyanide

Ferrous cyanide

Ferri - Ferro cyanide

Potassium ferrocyanide is a

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Mixed salt

Double salt

Complex salt

Normal salt

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