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Chemistry

Chemistry
Glycol is used to manufacture which of the following ?

Artificial silk
Nylon
Terylene
Rubber

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Chemistry
The element with highest ionization potential is

Helium
Boron
Oxygen
Carbon

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Chemistry
Which one among the following is not a mixture?

Graphite
Steel
Brass
Glass

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Chemistry
Silicon is a

Conductor
Nonconductor
Semiconductor
Insulator

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Chemistry
The most important ore of lead is

Siderite
Pyrolusite
Galena
Magnetite

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

Fe3O4
FeS2
FeCO3
Fe2O3

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