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प्रश्न
Complete and balance the following equation:
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उत्तर
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संबंधित प्रश्न
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.
Write the chemical reaction when iron reacts with dilute H2SO4.
Food cans are coated with tin and not with zinc because ______.
Explain the following reaction with the help of a balanced chemical equation:
Magnesium reacts with hot water.
Name the metal which has been placed at the top of the reactivity series.
Write equation for the reaction of magnesium with oxygen.
What type of oxides are formed when non-metals react with oxygen? Explain with an example.
How do non-metals react with hydrogen? Explain with an example.
What happens when a rod of zinc metal is dipped into a solution of copper sulphate? Give chemical equation of the reaction involved.
Give one example, with equation, of the displacement of hydrogen by a metal from an acid.
What is the action of water on magnesium ? Write equation of the chemical reaction involved.
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
What is meant by the reactivity series of metals? Arrange the following metals in an increasing order of their reactivities towards water:
Zinc, Iron, Magnesium, Sodium
A basic oxide will be formed by the element:
(a) K
(b) S
(c) P
(d) Kr
An acidic oxide is produced by the element:
(a) Na
(b) C
(c) Ca
(d) H
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
In nature, metal A is found in a free state while metal B is found in the form of its compounds. Which of these two will be nearer to the top of the activity series of metals?
When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding sodium metal to water catches fire. Why is it so?
Which one among the following is an acidic oxide?
