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प्रश्न
Give one example : A basic oxide which is insoluble in water.
उत्तर
CuO
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संबंधित प्रश्न
Explain the formation of hydronium ion.
Define the term neutralization, if one mole of a strong acid reacts with one mole of a strong base, the heat produced is always the same. Why?
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?
From the list given below. Select the word(s) required to correctly complete the blanks (i) to (v) in the following passage:
Ammonia, Ammonium, Carbonate, Carbon dioxide, Hydrogen, Hydronium,
A solution 'X' turns blue litmus red so it must contain (i) ______ ions; another solution 'Y' turns red litmus blue and therefore must contain(ii) ______ ions. When solutions X and Y are mixed together, the products will be a (iii) ______ and ______ (iv) ______. If a piece of magnesium was put into solution X, (v) ______ gas would be evolved.
Fill in the blank from the choices given in bracket.
When a metallic oxide is dissolved in water, the solution formed has a high concentration of ___________ ions. (H+,H3O+,OH-)
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?
Answer the following question related to salts and their preparations:
What kind of salt is prepared by precipitation?
Making use only of substances chosen from those given below:
(Dilute sulphuric acid, sodium carbonate, Zinc, sodium sulphite, Lead, calcium carbonate)
Give the equation for the reaction by which you could obtain hydrogen.
State your observation:
Zinc granule is added to copper sulphate solution.
