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Chemistry

Chemistry
Which one of the following does not form oxyacid ?

Sulphur
Fluorine
Chlorine
Nitrogen

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Chemistry
Which type of radiations are absorbed by the upper layer of the atmosphere?

Radio-waves
Ultraviolet
Visible
Infrared

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Chemistry
The metal ion present in Vitamin B12 is

Cobalt
Zinc
Iron
Nickel

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Chemistry
The gas that is used in the manufacture of vanaspati ghee is :

Oxygen
Nitrogen
Hydrogen
Carbon dioxide

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Chemistry
Which metal is the heaviest in periodic table among the following ?

W
Os
Pt
Pb

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Chemistry
KMnO4 can be used as a/an

Fertiliser
Insecticide
Pesticide
Disinfectant

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