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Q. How can we obtain Pure alumina?
Pure alumina is obtained from bauxite ore. Powdered bauxite mineral is heated in a concentrated solution of sodium hydroxide under pressure when alumina and silica get dissolved:
Al203 + 2NaOH + 3H20---------------------------------> 2 NaAI(OH)4
Si02 + 2NaOH ------------------------------------------> Na2Si03 + H20
sodium does not react with a) Carbon b) Nitrogen c) Hydrogen d)both a an b
Physical properties of monohydric alcohols (a) Character - Monohydric Alcohols are neutral component. These comprise no effect on litmus paper. This is analytical investigation
percentage concentration of 18-k gold bracelet, 150 grams
Ingrain dyes (developed dyes) - Ingrain dyes are those that are synthesised straight on the fabric. Instances of this type of dyes are azo dyes. In this the fabric is wrapped up
Explain Curie point and hystereris? An ordinary piece of iron generally has little or no net magnetic moment. Though, if it is placed in a strong enough external magnetic fie
I WHAT TO KNOW THE VARIOUS TYPES OF AMPEROMETRY
Uses of Alkenes (i) Alkenes are used for the manufacture of polythene - a plastic material; (ii) Alkenes are used for artificial ripening of fruits; (iii) Alkenes are us
Equivalent Weight
styx code of B4H10
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