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Chemistry

Chemistry
The substance which does not expand on going from liquid state to solid state is

Type metal
Aluminium
Cast-iron
Water

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Chemistry
The inert gases are ____ in water

soluble
sparingly soluble
insoluble
None of these

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Chemistry
The name of plastic polymer from which combs, toys, bowls etc., can be made, is

Teflon
Polystyrene
Polyurethane
Metallic polysulphides

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Chemistry
The structure of (HPO3)3 is

Linear
Octahedral
Tetrahedral
Cyclic

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Chemistry
Isobars are lines joining places having equal

Pressure
Population
Rainfall
Height above sea-level

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Chemistry
Carbon monoxide is an inflammable gas. Which one of the following is also inflammable?

Nitrogen
Hydrogen
Oxygen
Helium

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