Question # 1

--------------- element forms an ion with charge 3⁺

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Beryllium

Aluminium

Carbon

Silicon

Lead monoxide is

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Amphoteric

Neutral

Acidid

Basic

Which one of the following elements exhibits s-inert pair effect.

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B

Al

Pb

Sc

Tincal is a mineral of.

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Al

B

Si

C

Aluminium oxide is

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Acidic oxide

Baric oxide

Amphoteric oxide

None of these

Aluminium oxide is.

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Acidic oxide

Basic oxide

Amphoteric oxide

None of these

Which are correct oxidation states for lead

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+1, +2

+3 , +5

+2 ,+4

+4 only

Which one of the following compounds of lead is red in colour

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PbO

Pb2O

Pb3O4

PbCO3

Which element form an ion with charge +3

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Beryllium

Aluminum

Carbon

Sillicon

Which of the following elements is not present abundantly in earth's crust.

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Silicon

Aluminium

Sodium

Oxygen

Which substances is called chrome yellow.

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Pb3O4

PbO

2PbCO3.Pb(OH)2

PbCrO4

silicones are

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Some salts of sodium

Allotropes of SI

Inorganic polymers

Coloured compounds of Si

A solution of borax in water is.

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Acidic

Alkaline

Neutral

None of these

Aluminium is used for making petrol and milk storage tanks because it is

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Conductor

Non magnetic

Excellent reflected

Corrosion resistant

Kaolin is a mineral of

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Carbon

Magnesium

Silicon

Aluminium

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