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प्रश्न
What happens when Iron nails are placed in copper sulphate solution?
Write word equations of the reactions involved.
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उत्तर
Iron being more reactive displaces copper from copper sulphate solution. In this reaction, the blue colour of copper sulphate fades and there is deposition of copper on the iron nail.
Iron(Fe) + Copper Sulphate(CuSO4) → Iron Sulphate (FeSO4) + Copper(Cu)
संबंधित प्रश्न
State one use of the following metal:
Iron
Mention two uses of the following metals and non-metals
Aluminium
Fill in the blank
_______ is a soft metal.
State the position of the following in the periodic table:
Iron and zinc
The electronic configuration of metal ‘A’ is 2,8,1 and that of metal ‘B’ is 2,8,2. Which of the two metals is more reactive? Write their reaction with dilute hydrochloric acid.
Match the alloys given in column I to the uses given in column II :
| Column I | Column II |
| (i) Duralumin | A. Electrical fuse |
| (ii) Solder | B. Surgical instruments |
| (iii) Brass | C. Aircraft body |
| (iv) Stainless Steel | D. Decorative articles |
State a specific reason for using copper in electrical cables
Assertion: Mercury is solid in room temperature.
Reason: Mercury is a non-metal.
Metals are usually solids or gases at room temperature.
Match the following
| i. | Silica | a. | Caustic potash |
| ii. | Potassium hydroxide | b. | Sand |
| iii. | Sodium hydroxide | c. | Calamine |
| iv. | Zinc carbonate | d. | Caustic soda |
