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Chemistry

Chemistry
Which of the following is not a noble gas ?

Hydrogen
Neon
Helium
Argon

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Chemistry
A metal is exposed to the atmosphere for sometime. It becomes coated with green carbonate. The metal must be

Zinc
Silver
Aluminium
Copper

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Chemistry
The important metal used with iron to produce stainless steel is

Carbon
Aluminium
Chromium
Tin

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Chemistry
Which one of the following metals does not react with water to produce Hydrogen ?

Lithium
Sodium
Cadmium
Potassium

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Chemistry
Which of the following elements is found in all organic compounds

Carbon
Oxygen
Calcium
Nitrogen

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Chemistry
Which of the following does the Nucleus of an atom consist of?

Electrons
Protons and electrons
Protons
Protons and neutrons

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