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CHEMISTRY

Chemistry
The inert gas used as beacon light is

Ne
Kr
He
Ar

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Chemistry
The noble gas used in radiotherapy is

Radon
Argon
Neon
Xenon

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Chemistry
Inert gases are

Chemically unreactive
Miscible with water
Chemically very active
Not stable

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Chemistry
Which one of the following does not form oxyacid ?

Chlorine
Fluorine
Nitrogen
Sulphur

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Chemistry
Which of the following is not a method of preparing oxygen?

Decomposition of manganese dioxide
Electrolysis of water
Fractional distillation of liquid air
Decomposition of potassium permanganate

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