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प्रश्न
Carbon dioxide and sulphur dioxide gas can be distinguished by using ______.
पर्याय
moist blue litmus paper
lime water
acidified potassium dichromate paper
none of the above
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उत्तर
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संबंधित प्रश्न
Write a balanced chemical equation for the preparation of the following salts
Copper carbonate
How is the following salt prepared:
Calcium sulphate from calcium carbonate,
State how would you prepare copper (II) oxide from
Copper nitrate
From the list of the substances given, name the substances which you would use to prepare each of the following salts:
List of substances: Copper, lead, sodium, zinc, copper oxide, lead carbonate, sodium carbonate solution, dilute hydrochloric acid, dilute nitric acid and dilute sulphuric acid.
Salts: (a) zinc sulphate (b) copper sulphate (c) sodium sulphate (d) lead sulphate.
Some methods used for the laboratory preparation of salts are:
(a) Metal + acid
(b) Carbonate + acid
(c) Precipitation
(d) Direct combination
(e) Titration
Copy and complete the following table :
| Salt | Method of Preparation |
| Ammonium Sulphate | |
| Calcium carbonate | |
| Iron (III) chloride | |
| Lead nitrate | |
| Zinc sulphate |
Choosing the correct words given in brackets, complete the sentence given below: Sodium sulphate from sodium carbonate.
Which of the following methods, (a), (b), (c), (d) or (e) is generally used for preparing the chlorides listed below from (i) to (v). Answer by writing down the chloride and the letter pertaining to the corresponding method. Each letter is to be used only once.
(a) Action of an acid on a metal.
(b) Action of an acid on an oxide or carbonate.
(c) Direct combination.
(d) Neutralization of an alkali by an acid.
(e) Precipitation (double decomposition).
(i) copper(II) chloride.
(ii) iron(II) chloride.
(iii) iron(IIl) chloride.
(iv) lead (II) chloride.
(v) sodium chloride.
Explain why Anhydrous FeCl3 cannot be prepared by heating hydrated iron (III) chloride.
Select the word/s given which are required to correctly complete the blanks.
If a piece of magnesium was put into a solution M, ______ gas would be evolved.
For the preparation of the following salts - give a balanced equation in the following case.
Lead [II] chloride from lead carbonate [give two equations]
