Advertisements
Advertisements
प्रश्न
From the list given below, select the word(s) required to correctly complete blanks (i) to (v) in the following passage. The words from the list are to be used only once. Write the answers as (a) (i), (ii) (iii) and so on. Do not copy the passage.
A solution M turns blue litmus red, so it must contain _______ ions; another, solution O turns red litmus blue and hence, must contain ______ ions.
Select the word/s given which are required to correctly complete the blanks.
पर्याय
ammonia
ammonium carbonate
carbon dioxide
hydrogen
hydronium
hydroxide
precipitate
salt
water
Advertisements
उत्तर
A solution M turns blue litmus red, so it must contain hydronium ions; another, solution O turns red litmus blue and hence, must contain hydroxide ions.
Notes
Students should refer to the answer according to their questions.
APPEARS IN
संबंधित प्रश्न
Describe giving all practical details, how would you prepare:
lead sulphate from metallic lead.
Explain why It is necessary to find out the ration of reactants required in the preparation of sodium sulphate.
Give equation to prepare the following as directed
MgCO3 from MgCl2
Define the following term:
Neutralisation
Write the balanced equation for the preparation of the following compounds, starting from iron and using other substance: Iron (II) chloride
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)
What is the first step that is required to prepare lead sulphate from lead carbonate?
Give the equation for the preparation of the following salt from the starting material given.
Iron (III) Chloride from Iron
Choose the most appropriate answer from
(SO2, SiO2, Al2O3, CO, MgO, Na2O)
A covalent oxide of a metalloid.
Match the salts underlined in Column A with the most suitable method of preparation given in Column B.
| Column A | Column B | ||
| (a) | \[\ce{ZnCl2 \text{from} Zn}\] | 1. | Precipitation |
| (b) | \[\ce{KNO3 \text{from} KOH}\]. | 2. | Direct combination |
| (c) | \[\ce{CaCO3 \text{from} CaCl2}\]. | 3. | Displacement reaction |
| 4. | Neutralization |
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:
Sodium sulphate.
