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Chemistry

Chemistry
The inert gas used as beacon light is

He
Ar
Ne
Kr

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Chemistry
The Fungus which is used in the alcohol industry is

Rhizopus
Mushroom
Yeast
Candida Aibicans

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Chemistry
The material used in the manufacture of lead pencil is

Mica
Carbon
Graphite
Lead

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Chemistry
What is the maximum Water Vapour content in the atmosphere?

3 to 4 per cent
4 to 5 per cent
2 to 3 per cent
5 to 6 per cent

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Chemistry
Nitrification is the biological process of converting

Ammonia into nitrite
Ammonia into N2
N2 into nitrate
N2into nitrite

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Chemistry
The oxidation number of nickel in K4[Ni(CN)4] is

Zero
–4
8
4

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