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Chemistry

Chemistry
Zone refining is used for the purification of

Ge
Ag
Au
Cu

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Chemistry
‘Aerosol’ is known as

Suspended solid particles in air
Pollutant gas, present in air
Microbes, present in air
Green house gas present in air

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Chemistry
The elements with atomic numbers 9, 17, 35, 53, 85 are all

Halogens
Light metals
Noble gases
Heavy metals

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Chemistry
The most abundant rare gas in the atmosphere is

Ar
Xe
Ne
He

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Chemistry
Which one is not a primary greenhouse gases in the Earth's atmosphere

Nitrogen
Carbon dioxide
Methane
Ozone

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Chemistry
In which of the following substances all carbon atoms are quaternary in nature ?

Napthalene
Teflon
Diamond
Graphite

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