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Chemistry

Chemistry
Which of the following is not a noble gas ?

Neon
Argon
Helium
Hydrogen

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Chemistry
Limestone is a raw material used by which industry?

Aluminium
Fertilizers
Cement
Petrochemicals

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Chemistry
How many neutrons are there in 92U238 atom ?

92
330
238
146

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

Diamond
Graphite
Teflon
Napthalene

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Chemistry
Which of the inert gases can form compounds?

Helium
Argon
Xenon
Krypton

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Chemistry
The number of electrons presents in H+ is

two
zero
one
three

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