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Alum is used to treat the polluted water.

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Important Questions on Acids, Bases and Salts

HARD
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Electrolysis of sodium chloride produces a gas A when A is passed through a solution of compound B another compound C is formed which is used as an oxidising agent in many chemical industries. A, B, and C will be respectively:
EASY
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The real bleaching agent present in bleaching powder is 
MEDIUM
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Which of the following compounds is used to repair fractured bones?
MEDIUM
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Read the following statements.

Statement - I: Plaster of Paris is stored in moisture proof containers.

Statement - II: Plaster of Paris on reaction with water changes into a hard solid gypsum. 

Select the correct answer from the options given below:

EASY
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Plaster of Paris hardens by: 
 
MEDIUM
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The water of crystallization in gypsum and plaster of paris respectively are-
EASY
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What is the common name of compound CaOCl2?
EASY
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The chemical formula of plaster of Paris is 
MEDIUM
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Which of the following is used to purify drinking water?
EASY
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The chemical formula of common salt is-
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The chemical formulae of baking Soda is
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The chemical formula for plaster of Paris is:
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Baking powder is a mixture of
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Baking powder is a mixture of baking soda and 

MEDIUM
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Baking soda is a mixture of:
EASY
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Which of the following is called "Lunar Caustic"?
EASY
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The formula of baking soda is -
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Potassium alum is used in _____ powder.
HARD
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The discomfort caused by indigestion due to overeating can be cured by taking.
MEDIUM
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A solution of white crystals gives a precipitate with AgNO3 but no precipitate with solution of Na2CO3. The action of conc. H2SO4 on the crystal yields a brown gas. The crystals are of :