Question # 1

The type of hybridization in PCl3 is.

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dsp2

sp3

dsp3

d2sp3

f-block elements are also called

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non typical transition elements

outer transition elements

normal transition elements

inner transition elements

Which is not coloured ion

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SO4^-2

MnO4-3

CrO4^-2

Cr2O7^-2

Which form interstitial compounds.

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Fe

Ni

CO

All of those

The total number of transition element is

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10

14

40

58

The colour of transition metal complexes

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d-d transitions of electrons

paramagnetic nature of transition elements

ionization

loss of s-electron

Total number of d-block elements are

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10

20

30

40

Stainless steel is

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Compound

An element

Mixture

100% pure iron

The chemical composition of pyrolusite is.

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KMnO4

K2MnO4

MnO2

MnO

Co-ordination number of Cu in

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Zero

Two

Four

Six

Group VI B to transition elements contains

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Zn, Cd, Hg

Fe, Ru, OS

Cr, MO, W

Mn, Te, Re

Which of the following is a typical transition metal

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Sc

Y

Ra

Co

The aqueous solution of which substances is green in colour

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K2CrO4

K2CrO7

KMnO4

K2MnO4

The variation pattern in ionic radii of first transition series shows

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A regular increase

A regulars decrease

No regular pattern

A regular decrease and than alight increase

Which one of the following elements has no variable valency.

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Zinc

Iron

cobalt

Manganese

Which is not an ore of iron

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haematite

Magnetite

limonite

Cassiterite

To prevent corrosion, Iron pipes carrying drinking water are covered with zinc by

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alley formation

Electroplating

Galvanizing

Soldering

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