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प्रश्न
How would you show that silver is chemically less reactive than copper?
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उत्तर
When silver is dipped in a copper sulphate solution, no reaction occurs. This means silver cannot displace copper from the copper sulphate solution. Hence, it shows that silver is chemically less reactive than copper.
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संबंधित प्रश्न
_________ solution is blue in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
Name the following:
Metals which forms an amphoteric oxide.
Write equations for the reactions of calcium and potassium with water.
Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows.
| Metal | Iron (II) sulphate | Cooper (II) sulphate | Zinc sulphate | Silver nitrate |
| A | No reaction | Displacement | ||
| B | Displacement | No reaction | ||
| C | No reaction | No reaction | No reaction | Displacement |
| D | No reaction | No reaction | No reaction | No reaction |
Use the Table above to answer the following questions about metals A, B, C and D.
- Which is the most reactive metal?
- What would you observe if B is added to a solution of copper (II) sulphate?
- Arrange the metals A, B, C and D in the order of decreasing reactivity.
Name the metal which has been placed just below copper in the reactivity series.
Fill in the following blank with suitable word:
Magnesium liberates ............... gas on reacting with hot boiling water.
What type of oxides are formed when metals combine with oxygen? Explain with the help of an example.
What happens when calcium reacts with chlorine? Write an equation for the reaction which takes place
What happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved.
A copper plate was dipped in AgNO3 solution. After certain time, silver from the solution was deposited on the copper plate. State the reason why it happened. Give the chemical equation of the reaction involved.
Why is white phosphorus kept immersed under water?
What is the action of water on magnesium ? Write equation of the chemical reaction involved.
Write the equation for the reaction of Magnesium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
You are given a solution of AgNO3. Which of the following do you think cannot displace Ag from AgNO3solution?
(a) Magnesium
(b) Zinc
(c) Gold
(d) Copper
The elements whose oxides can turn litmus solution blue are:
(a) carbon and sulphur
(b) sodium and carbon
(c) potassium and magnesium
(d) magnesium and sulphur
State and explain the reaction, if any, of the following metals with a solution of copper sulphate:
(a) Gold
(b) Copper
(c) Zinc
(d) Mercury
Write the chemical equation of the above process.
Write the chemical equation for the following reaction:
Calcium metal reacts with water.
Generally, metals are solid in nature. Which one of the following metals is found in liquid state at room temperature?
Which of the following property is not responsible for copper to be used as electrical conduction wires?
