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Atoms Molecules Mixtures and Compounds
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Atoms Molecules Mixtures and Compounds
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Atoms Molecules Mixtures and Compounds
In steel and iron industries, the gas used for cutting, welding and melting of metal is
oxygen
nitrogen
helium
hydrogen
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Atoms Molecules Mixtures and Compounds
Gas used in electrical generators as a rotor coolant is
nitrogen
carbon
hydrogen
oxygen
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Atoms Molecules Mixtures and Compounds
Sublimation is a technique that helps chemists to
break
purify
melt
freeze
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Atoms Molecules Mixtures and Compounds
A bowl of oat meal is an example of
collection
solution
compound
mixture
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Atoms Molecules Mixtures and Compounds
A molecule made up of carbon and hydrogen is
methane
water
sodium chloride
carbon dioxide
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Atoms Molecules Mixtures and Compounds
The chemical symbol for nitrogen gas is
P
S
N
Ne
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Atoms Molecules Mixtures and Compounds
A soft, ductile and malleable metal with high conductivity of heat and electricity is
silver
copper
nickel
iron
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Atoms Molecules Mixtures and Compounds
Chromatography is generally used by
chemists
farmers
magician
Nurses
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Atoms Molecules Mixtures and Compounds
Petroleum is a mixture of crude oil and natural gas, these two substance are formed
none of them
artificially
naturally
occasionally
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Atoms Molecules Mixtures and Compounds
The elements that does not conduct heat and electricity very well are known as
solid
metal
non-elastic
non-metal
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