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Chemistry

Chemistry
The structure of (HPO3)3 is

Cyclic
Octahedral
Linear
Tetrahedral

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Chemistry
The purest form of water is

Distilled water
Ground water
Rain water
Tap water

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Chemistry
In which of the following states maximum iron ore is found ?

Fe3O4
FeCO3
Fe2O3
FeS2

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Chemistry
Black lung disease occurs in people working in

Organic solvents industry
Coal mines
Electroplating industry
Paint manufacturing industry

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Chemistry
The hottest part of the gas flame is known as

luminous zone
blue zone
non-luminous zone
dark zone

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Chemistry
Limestone is a raw material used by which industry?

Cement
Petrochemicals
Fertilizers
Aluminium

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