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प्रश्न
A metal less reactive and another metal more reactive than hydrogen are:
(a) aluminium and lead
(b) iron and magnesium
(c) copper and tin
(d) copper and mercury
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उत्तर
(c) copper and tin
Copper lies below hydrogen and tin lies above hydrogen in the reactivity series of metals.
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संबंधित प्रश्न
_________ solution is blue in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
Write equations for the reactions of iron with steam.
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.
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- Arrange the metals A, B, C and D in the order of decreasing reactivity.
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Na, S, C, K, H
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Write the equation for the reaction of Aluminium with dilute hydrochloric acid.
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Name one metal which displaces copper from copper sulphate solution and one which does not.
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(b) Ag
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(c) P
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What is the cause of chemical bonding (or chemical combination) of atoms of elements?
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Calcium metal reacts with water.
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(i) Good thermal conductivity
(ii) Good electrical conductivity
(iii) Ductility
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