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Chemistry

Chemistry
The inert gas used as beacon light is

Kr
He
Ar
Ne

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Chemistry
Bone ash contains

Calcium sulphate
Calcium phosphate
Phosphoric sulphate
Calcium hypophosphate

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Chemistry
Formation of ozone hole is maximum over

Europe
Antarctica
India
Africa

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Chemistry
The hardest form of carbon is

graphite
charcoal
diamond
coke

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Chemistry
Which is the heaviest metal among the following?

Copper
Iron
Gold
Silver

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Chemistry
Which one of the following has a maximum tendency to form M3 ion ?

Bi
As
N
P

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