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Chemistry

Chemistry
The metal ion present in Vitamin B12 is

Zinc
Cobalt
Iron
Nickel

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Chemistry
Which is the purest commercial form of iron ?

Pig iron
Stainless steel
Steel
Wrought iron

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Chemistry
Which one of the following is commonly used for pulp bleaching in the paper industry?

Glucose isomerase
Mild sulphuric acid
Hydrogen peroxide
Iodine and water

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Chemistry
Glycol is added to aviation gasoline because it

Increases efficiency of petrol
Reduces evaporation of petrol
Reduces consumption of petrol
Prevents freezing of petrol

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Chemistry
Peroxyacetyl nitrate is a

Secondary pollutant
Vitamin
Acidic dye
Plant hormone

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Chemistry
The depletion of ozone layer is due to

Ethane
Chloro fluoro carbon
Carbon dioxide
Sulphur dioxide

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MORE MCQ ON Chemistry

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