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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
Explain the following reaction with the help of a balanced chemical equation:
Magnesium reacts with hot water.
What name is given to those metal oxides which show basic as well as acidic behaviour?
Name the metal which has been placed at the top of the reactivity series.
How do non-metals react with hydrogen? Explain with an example.
Why does aluminium not react with water under ordinary conditions?
Give one example, with equation, of the displacement of hydrogen by a metal from an acid.
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
What happens when a metal reacts with dilute hydrochloric acid? Explain with the help of an example.
Name one metal more reactive and another less reactive than hydrogen.
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
The elements whose oxides can turn litmus solution blue are:
(a) carbon and sulphur
(b) sodium and carbon
(c) potassium and magnesium
(d) magnesium and sulphur
CuSO4(aq) + Fe(s) → FeSO4(aq) + Cu(s)
FeSO4(aq) + Zn(s) → ZnSO4(aq) + Fe(s)
On the basis of the above reactions, indicate which is most reactive and which is least reactive metal out of zinc, copper and iron.
Write the chemical equation for the following reaction:
Calcium metal reacts with water.
A cable manufacturing unit tested few elements on the basisof their physical properties.
| 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 |
Which of the above elements were dicarded for usage by the company?
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
- Good thermal conductivity
- Good electrical conductivity
- Ductility
- High melting point
Generally, metals are solid in nature. Which one of the following metals is found in liquid state at room temperature?
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
Why is acidified water considered to be a good conductor of electricity?
