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प्रश्न
Choose the most appropriate answer from
(SO2, SiO2, Al2O3, CO, MgO, Na2O)
An oxide which when dissolved in water form acid.
उत्तर
SO2
संबंधित प्रश्न
Write a balanced chemical equation for the following:
Preparation of methane from iodomethane.
Write a balanced chemical equation for the preparation of the following salts
Copper carbonate
Distinguish between the given pairs of compounds using the test given within brackets:
A lead salt and a zinc salt (using excess ammonium hydroxide)
How is the following salt prepared:
Lead carbonate from lead nitrate.
How is the following salt prepared:
Sodium nitrate from sodium hydroxide.
Write the balanced equation for the preparation of the following compounds, starting from iron and other substance:
Iron (II) sulphide
Carbon dioxide and sulphur dioxide gas can be distinguished by using ______.
Mention the colour change observed when the following indicator is added:
| Solution | Acids | Alkalies |
| Alkaline phenolphthalein solution |
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 |
You are provided with the following chemicals:
NaOH, Na2CO3, H2O, Zn(OH)2, CO2, HCI, Fe, H2SO4, CI2, Zn.
Using the suitable chemicals from the given list only, state briefly how you would prepare sodium zincate.
