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Write One Reaction in Which Aluminium Oxide Behaves as a Basic Oxide and Another in Which It Behaves as an Acidic Oxide. - Science

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प्रश्न

Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.

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उत्तर

When aluminium oxide reacts with hydrochloric acid, it behaves as a basic oxide:
  Al2O3(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2O(l)

When aluminium oxide reacts with a base like sodium hydroxide, it behaves as an acidic oxide:
  Al2O3(s) + 2NaOH(aq) → 2NaAlO2(aq) +  H2O(l)

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अध्याय 3: Metals and Non-metals - Exercise 1 [पृष्ठ १३४]

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लखमीर सिंग Chemistry (Science) [English] Class 10
अध्याय 3 Metals and Non-metals
Exercise 1 | Q 56.1 | पृष्ठ १३४

संबंधित प्रश्न

Name two metals which form amphoteric oxides.


A copper coin is kept immersed in a solution of silver nitrate for some time. What will happen to the coin and the colour of the solution?


Name the metal which has been placed at the top of the reactivity series.


Complete and balance the following equation:

Na  +  O2 →


Fill in the following blank with suitable word:

 Magnesium liberates ............... gas on reacting with hot boiling water.


Fill in the following blank with suitable word:

Ordinary aluminium strips are not attacked by water because of the presence of a layer of ................. on the surface of aluminium.


 What happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved.


Give one example, with equation, of the displacement of hydrogen by a metal from an acid.


Name one metal which displaces copper from copper sulphate solution and one which does not.


An acidic oxide is produced by the element:
(a) Na
(b) C
(c) Ca
(d) H


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


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.


Which of the following reactions will not occur? Why not?

(a) MgSO(aq) + Cu (s) → CuSO(aq) + Mg (s)

(b) CuSO4 (aq) + Fe (s) → FeSO4 (aq) + Cu (s)

(c) MgSO4 (aq) + Fe (s) → FeSO4 (aq) + Mg (s)


Name a metal which It does not react with any physical state of water?


When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding sodium metal to water catches fire. Why is it so?


What is the characteristic of the electronic configuration of noble gases?


Answer the following question:
An element X on reacting with oxygen forms an oxide X2O. This oxide dissolves in water and turns red litmus blue. State whether element X is metal or a non - metal. Explain with a proper example. 


Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?


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


Metals are generally solid. Which of the following metals is in the liquid state at room temperature?


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