Advertisements
Advertisements
प्रश्न
A black coloured solid which on reaction with dilute sulphuric acid forms a blue coloured solution is ______.
पर्याय
Carbon
Manganese [IV] oxide
Lead [II] oxide
Copper [II] oxide
Advertisements
उत्तर
A black coloured solid which on reaction with dilute sulphuric acid forms a blue coloured solution is Copper [II] oxide.
APPEARS IN
संबंधित प्रश्न
Name the ion that turns red litmus blue.
Define in term of ionization an acid.
Define in term of ionization an alkali?
Name the ions furnished by bases in solution.
Give one example : A hydroxide which is highly soluble in water.
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, Hydroxide, Precipitate, Salt, Water.
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.
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:
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.
