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प्रश्न
A copper coin is kept immersed in a solution of silver nitrate for some time. What will happen to the coin and the colour of the solution?
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उत्तर
When a copper coin is kept immersed in a solution of silver nitrate for some time, the colour of the coin becomes shiny, greyish-white due to the deposition of silver on it. The solution turns blue due to the formation of copper nitrate.
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संबंधित प्रश्न
Name the following:
Metals which forms an amphoteric oxide.
Food cans are coated with tin and not with zinc because ______.
You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.
The reaction of an iron nail with copper sulphate solution is ........... reaction.
(a) Combination
(b) Displacement
(c) Double displacement
(d) Decomposition
What will happen if a strip of zinc is immersed in a solution of copper sulphate?
What type of oxides are formed when non-metals react with oxygen? Explain with an example.
Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:
Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium
Give one example, with equation, of the displacement of hydrogen by a metal from an acid.
Write the chemical equation of the reaction which takes place when iron reacts with dilute sulphuric acid. What happens when the gas produced is ignited with a burning matchstick?
You are given a solution of AgNO3. Which of the following do you think cannot displace Ag from AgNO3 solution?
An element E forms an oxide E2O. An aqueous solution of E2O turns red litmus paper blue.
- What is the nature of the oxide E2O?
- State whether element E is a metal or a non-metal.
- Give one example of an element like E.
Metal A burns in air, on heating, to form an oxide A2O3 whereas another metal B burns in air only on strong heating to form an oxide BO. The two oxides A2O3 and BO can react with hydrochloric acid as well as sodium hydroxide solution to form the corresponding salts and water.
- What is the nature of oxide A2O3?
- What is the nature of oxide BO?
- Name one metal like A.
- Name one metal like B.
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Which of the following is lue in colour?
Write the chemical equation of the above process.
Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?
Arrange the following metals in the increasing order of their reactivities:
Copper, Zinc, Aluminium, and Iron
Write the chemical equation for the following reaction:
Calcium metal reacts with water.
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(i) Good thermal conductivity
(ii) Good electrical conductivity
(iii) Ductility
(iv) High melting point
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Metals are generally solid. Which of the following metals is in the liquid state at room temperature?
