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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
assignment of 15 pages on dienes
Q. What are the characteristics of bases? Ans. Common bases are borax, baking soda, and antacids. These are some characteristics of bases: They taste bitter
number of electrons of cyanide
h2c2o4 + mno-4 - mno-4 +co2
Identify any samples that suggest gases were escaping from them as they cooled.
list the physical properties of two examples of metallic and non metallic elements
Urea or Carbamide - Carboxylic acids Urea may be referred like a diamide of an unstable and dibasic carbonic acid by which both the hydroxyl groups have been changed by -NH 2
what is the difference between the allotrope and polymorphs
explain zone refining method of purification of silicon
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