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Chemistry

Chemistry
Which one of the following minerals is found in pure form?

Iron
Manganese
Copper
Bauxite

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Chemistry
Inert gases are

Miscible with water
Chemically unreactive
Chemically very active
Not stable

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Chemistry
The unit of ionic product of water (Kw) is :

Mol2 let-2
Mol2 let-1
Mol-1 let-2
Mol-1 let-1

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Chemistry
Which of the following is a monoatomic gas?

Nitrogen
Oxygen
Neon
Fluorine

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Chemistry
Curd is sour due to presenceof

Lactic acid
Oxalic acid
Acetic acid
Tartaric acid

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Chemistry
The nuclear particle having no mass and no charge, but only spin is

Meson
Electron
Neutrino
Proton

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