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प्रश्न
What happens when calcium reacts with chlorine? Write an equation for the reaction which takes place
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उत्तर
Calcium reacts vigorously with chlorine to form calcium chloride, which is an ionic chloride.
Ca(s) + Cl2(g) → CaCl2(s)
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संबंधित प्रश्न
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.
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In which test tube or test tubes will she observe colour change? On the basis of this experiment, state which one is the most reactive metal and why.
Why are metals called electropositive elements whereas non-metals are called electronegative elements?
Name two metals which form amphoteric oxides.
Name the metal which has been placed at the top of the reactivity series.
Explain why, metals usually do not liberate hydrogen gas with dilute nitric acid.
Why does aluminium not react with water under ordinary conditions?
Name two metals (other than zinc and iron) which can displace hydrogen from dilute hydrochloric acid?
What is the action of water on aluminium ? Write equation of the chemical reaction involved.
Write the equation for the reaction of Aluminium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
Name one metal more reactive and another less reactive than hydrogen.
Name one metal which displaces copper from copper sulphate solution and one which does not.
The elements whose oxides can turn phenolphthalein solution pink are:
(a) Na and K
(b) K and C
(c) Na and S
(d) K and P
An element E reacts with water to form a solution which turns phenolphthalein solution pink. The element E is most likely to be:
(a) S
(b) Ca
(c) C
(d) Ag
Which of the following reactions will not occur? Why not?
(a) MgSO4 (aq) + Cu (s) → CuSO4 (aq) + Mg (s)
(b) CuSO4 (aq) + Fe (s) → FeSO4 (aq) + Cu (s)
(c) MgSO4 (aq) + Fe (s) → FeSO4 (aq) + Mg (s)
What are noble gases
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?
Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
