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Chemistry

Chemistry
The substance that is added to make natural rubber strong and more bouncy is

Chlorine
Polythene
Sulphur
Sponge

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

Carbon dioxide
Nitrogen
Oxygen
Hydrogen

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Chemistry
The strongest oxidizing agent among the following is:

Iodine
Fluorine
Oxygen
Chlorine

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Chemistry
Milk tastes sour when kept in the open for sometime due to the formation of

Acetic acid
Lactic acid
Citric acid
Carbonic acid

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Chemistry
The ionic radii of N3-, O2-, F- and Na+ follows the order

N3- > Na+ > O2- > F-
O2- > F- > Na+ > N3-
N3- > O2- > F- > Na+
Na+ > O2- > N3- > F-

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Chemistry
The ore of Aluminium is

Bauxite
Hematite
Chalco pyrites
Fluorspar

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