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प्रश्न
Write a chemical equation to illustrate the use of aluminium for joining cracked railway lines.
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उत्तर
\[\ce{\underset{oxide}{\underset{Iron (III)}{Fe2O3_{(s)}}} + \underset{Aluminium}{2Al_{(s)}} -> \underset{Iron}{2Fe_{(l)}} + \underset{oxide}{\underset{Aluminium}{Al2O3_{(s)}}} + Heat}\]
संबंधित प्रश्न
Show the formation of Na2O by the transfer of electrons.
Can we keep sodium immersed under water? Why?
What is the action of water on magnesium ? Write equation of the chemical reaction involved.
Write the equation for the reaction of Magnesium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
Out of the following oxides, the amphoteric oxide is:
(a) Fe2O3
(b) Al2O3
(c) P2O5
(d) N2O
Which of the following pair of reactants can undergo a displacement reaction under appropriate conditions?
(a) MgSO4 + Fe
(b) ZnSO4 + Fe
(c) MgSO4 + Pb
(d) CuSO4 + Fe
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)
If A, B, C, D, E, F, G, H, I, J and K represent metals in the decreasing order of their reactivity, which one of them is most likely to occur in a free state in nature?
Write the chemical equation of the above process.
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
(i) Good thermal conductivity
(ii) Good electrical conductivity
(iii) Ductility
(iv) High melting point
