Question # 1

A phtotographic plate is coated with an emulsion of silver nitrate and

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AgCI

AgI

AgBr

NaNO₃

Non-formation of menisus by Hg in presence of O₃is due to the formation of

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Mercuric oxide

Mercurous oxide

Mercuric chloride

Mercurous chloride

Coordination number of Pt in [PtCl (NO²) (NH³)⁴]^2-

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2^-

4

1

6

Cu²⁺with d⁹electronic configuration appears

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Yellow

Pink

Blue

Green

d-block elements are also called :

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alkali metal

Alkaline earth metals

Transition elements

Electron deficient elements

Which metal is used for catalytic hydrogenation of oils

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Cu

Pt

Ni

Pd

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

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Square planar

Tetrahedral

Octahedral

Trigonal bipyramidal

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

Corrosion may be prevented by

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Allcying

Paints

Metallic coatings

All

The lanthanides contraction is responsible for the fact that

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Zr and Y have about the same radius

Zr and Nb have similar oxidsation state

Zr and Hf have about the same radius

Zr and Zn have the same oxidation satete

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 of the following is used as disinfectant

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K₂Cr₂O₇

KMnO₄

K₂MnO₄

K₂CrO₄

Potassium chromate has formula

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KClO₃

K₂CO₃

K₂CrO₄

K₂Cr₂O₇

Transition metals mostly are

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Diamagnetic

Paramagnetic

Neither diamagnetic nor paramagnetic

Both diamagnetic and paramagnetic

Which of the following elements does not show variable oxidation states?

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Copper

Iron

Zinc

Titanium

Group VIB of transition elements contains

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Zn, Cd, Hg

Fe, Ru, Os

Cr, Mo, W

Mn, Te, Re

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 of the following is a not typical transition element

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Cr

Mn

Zn

Fe

Which period starts from ₁₁Sc to ₃₀Zn ?

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First Period

Second Period

Third Period

4th Period

Solubility of KMnO₄at higher temperature is:

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5%

7%

15%

25%

Bessemer converter is used in the manufacture of

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Pig iron

Steel

Wrought iron

Cast iron

Coordination sphere may be:

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Cationic

Anionic

Neutral

All above

Bell metal is an alloy of

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Cu, Zn, and Sn

Cu, Zn and Ni

Cu and Zn

Cu and Sn

3-d series elements are present in:

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First period

Second Period

Third period

4th period

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

Transition elements form which type of bond

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Ionic bonds only

Covalent bonds only

Ionic and covalent bonds

Polar bonds

f-Block elements are also called

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Non typical transition elements

Outer transition elements

Normal transition elements

Inner transition elements

Rusting can be avoided by :

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Making alloys

Tin or Zinc plating

Use of enamel

All of these

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 of the following metals is sometimes found in native state in nature?

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Al

Cu

Fe

Mg

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