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प्रश्न
The pH values of three solutions A, B and C are given in the table. Answer the following questions:
| Solution | pH value |
| A | 12 |
| B | 2 |
| C | 7 |
- Which solution will have no effect on litmus solution?
- Which solution will liberate CO2 when reacted with sodium carbonate?
- Which solution will turn red litmus solution blue?
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उत्तर
- Solution C with neutral pH has no effect on the litmus solution.
- Solution B with acidic pH liberates CO2 with sodium carbonate.
- Solution A with basic pH turns red litmus blue
संबंधित प्रश्न
The number of molecules of water of crystallisation present in washing soda crystals is ______.
A salt whose aqueous solution will have a pH of more than 7 will be ______.
P and Q are aqueous solutions of sodium chloride and sodium hydroxide, respectively. Which of these will turn:
- blue litmus red?
- red litmus blue?
Give one example of a salt which gives an aqueous solution having:
pH less than 7
The pH values of three solutions A, B and C are given in the table. Answer the folloiwng questions:
| Solution | pH value |
| A | 12 |
| B | 2 |
| C | 7 |
Which solution will liberate CO2 when reacted with sodium carbonate?
Define the following term:
Efflorescence
Taking sodium carbonate as an example, give the meaning of the following terms:
Water of crystallization
Many salts absorb water from the atmosphere. This property is called:
Salt is ______ in nature.
You are provided with the list of chemicals mentioned below in the box:
| Sodium hydroxide solution, copper carbonate, zinc, hydrochloric acid, copper, dilute sulphuric acid, chlorine, iron |
Using suitable chemicals from the list given, write a balanced chemical equation for the preparation of the salt mentioned below:
Sodium zincate
