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Chemistry

Chemistry
Higher concentration of nitrogen dioxide in atmosphere air causes

Cancer
Asphyxiation
Corrosion
Bronchitis

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Chemistry
The gas used in the manufacture of vanaspati from vegetable oil is

hydrogen
oxygen
carbon dioxide
nitrogen

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Chemistry
Which one of the following elements is used in the manufacture of fertilizers ?

Aluminium
Fluorine
Potassium
Lead

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Chemistry
Water can be separated from alcohol water mixture by

Distillation
Decantation
Sublimation
Evaporation

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Chemistry
Percentage of carbon in steel ranges from

1.5 to 3.0
0.1 to 1.5
4.0 to 6.0
3.0 to 4.0

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Chemistry
When a spoon is to be electroplated with nickel the spoon is

Coated with nickel sulphate and dried
Made anode and a pure nickel rod, the cathode
Dipped in a nickel sulphate solution
Made cathode and a pure nickel red, the anode

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