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प्रश्न
Carbon dioxide and sulphur dioxide gas can be distinguished by using ______.
विकल्प
moist blue litmus paper
lime water
acidified potassium dichromate paper
none of the above
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उत्तर
संबंधित प्रश्न
Write a balanced chemical equation for the following:
Preparation of methane from iodomethane.
Name the procedure used to prepare a sodium salt such as sodium sulphate.
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:
Anhydrous ferric chloride.
Give equation to prepare the following as directed
MgCO3 from MgCl2
Write equation for the laboratory preparation of the following salt, using sulphuric acid: Iron (II) sulphate from the iron.
Match the salts given in Column I with their method of preparation given in Column II:
| Column I | Column II | ||
| (i) | Pb(NO3)2 from PbO | (a) | Simple displacement |
| (ii) | MgCl2 from Mg | (b) | Titration |
| (iii) | FeCl3 from Fe | (c) | Neutralization |
| (iv) | NaNO3 from NaOH | (d) | Precipitation |
| (v) | ZnCO3 from ZnSO4 | (e) | Combination |
Give the equation for the preparation of the following salt from the starting material given.
Potassium sulphate from potassium hydroxide solution
State the inference drawn from the following observation:
Salt S is prepared by reacting dilute sulphuric acid with copper oxide Identify S.
For each of the salt: A, B, C and D, suggest a suitable method of its preparation.
A is a sodium salt.
For each of the salt: A, B, C and D, suggest a suitable method of its preparation.
D is a soluble salt of zinc.
