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प्रश्न
Name two metals (other than zinc and iron) which can displace hydrogen from dilute hydrochloric acid?
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उत्तर
Magnesium and aluminium are two metals that can displace hydrogen from dilute hydrochloric acid.
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संबंधित प्रश्न
Write equations for the reactions of calcium and potassium with water.
Write the electron-dot structures for sodium, oxygen and magnesium.
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(c) Double displacement
(d) Decomposition
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Na2O + H2O →
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Why is white phosphorus kept immersed under water?
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Zinc, Iron, Magnesium, Sodium
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(a) CO
(b) H2O
(c) N2O
(d) Na2O
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
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Explain the following:
Reactivity of aluminium decrease if it is dipped in nitric acid.
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| Properties | W | X | Y | Z |
| Malleable | Yes | No | No | Yes |
| Ductile | Yes | No | No | Yes |
| Electrical conductivity | Yes | Yes | Yes | No |
| Melting Point | High | Low | Low | High |
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