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प्रश्न
Give one example : An oxide which is a base.
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उत्तर
CuO
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संबंधित प्रश्न
Name a salt prepared by direct combination. Write an equation for the reaction that takes place in preparing the salt you have named.
Define the term neutralization, Give a reaction, mentioning clearly acid and base used in the reaction.
Name the ions furnished by : an acid
Give one example : A basic oxide which is insoluble in water.
Give one example : A base which is not an alkali.
The preparation of lead sulphate from lead carbonate is a two step process (lead sulphate cannot be prepared by adding dilute sulphuric acid to lead carbonate)
Why is the direct addition of dilute sulphuric acid to lead carbonate an impractical method of preparing lead sulphate?
Solution A is a sodium hydroxide solution. Solution B is a weak acid. Solution C is dilute sulphuric acid. Which solution will.
(i) Liberate sulphur dioxide from sodium sulphite
(ii) Give a white precipitate with zinc sulphate solution,(iii) Contain solute molecules and ions?
Choose the correct answer:
The salt which in solution gives a pale precipitate with sodium hydroxide solution and a white precipitate with barium chloride solution is:
The following is a list of methods for the preparation of salts.
A – direct combination of two elements
B – reaction of a dilute acid with a metal.
C – reaction of a dilute acid with an insoluble base.
D – titration of a dilute acid with a solution of soluble base.
E – reaction of two solutions of salts to form a precipitate.
Choose from the above list A to E, the best method of preparing the following salt by giving a suitable equation in the following case:
Lead chloride.
State your observation:
Zinc granule is added to copper sulphate solution.
