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Chemistry

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

FeCO3
Fe3O4
Fe2O3
FeS2

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Chemistry
The wire of flash bulbs is made up of

Ba
Mg
Cu
Ag

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Chemistry
The gas used for artificial fruit ripening of green fruit is

Ethane
Ethylene
Acetylene
Methane

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Chemistry
Particulates (< 1 µm size) remaining suspended in air indefinitely and transported by wind currents are called

Fumes
Mists
Smoke
Aerosols

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Chemistry
Galvanization of iron is carried out using

Chromium
Tin
Copper
Zinc

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Chemistry
Normal rainwater has a pH level of

8.3
3.2
5.6
6.3

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