Question # 1

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

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Conductor

Non magnetic

Excellent reflected

Corrosion resistant

Which element burns in nitrogen atmosphere to form nitride.

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Mg

Al

Both a and b

None of these

Boric acid cannot be used

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As antiseptic in medicine

For washing eyes

In soda bottles

For Enamals and Glazes

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

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Silicon

Aluminium

Sodium

Oxygen

Which electronic configuration corresponds to an element of group III-A of the Periodic Table

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1s²,2s²,2p⁶,3s²,3p¹

1s²,2s²,2p⁶,3s²,3p⁶,4s⁶

1s²,2s²,2p⁶

1s²,2s²,3s²,3p³

Which element form an ion with charge +3

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Beryllium

Aluminum

Carbon

Sillicon

Which one of following is used in cosmetics

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Talc

Asbestos

Sodium sulphate

Aluminium Sulphate

Tincal is a mineral of.

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Al

B

Si

C

Which metal is used in the thermite process because of its activity.

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Iron

Copper

Aluminium

Zinc

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

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PbO

Pb2O

Pb3O4

PbCO3

Corundum is

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Al2O3

Na2AlF6

Quartz

Calcium

Which one of the followings is not ore of aluminium

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Coruridum

Bauxite

Colemanite

Kaolin

Boric acid can not be used.

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As antiseptic in medicine

For washing eyes

In soda bottle

For enamels and glazes

Boric acid is used as eye wash due to its

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Weakly acidic property

Antiseptic nature

Antibiotic nature

Weakly basic properties

Which is used in the leather industry

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Borax

Boric acid

Boric oxide

Tetra Boric acid

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