A metal which gives amphoteric oxide on reaction with oxygen gas is

Na (Sodium)

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Al (Aluminium)

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C (Carbon)

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K (Potassium)

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Solution

The correct option is B
Al (Aluminium)

Aluminium on reaction with oxygen, forms $A l_{2} O_{3}$ . This metal oxide shows both acidic as well as basic behaviour. Such metal oxides which react with both acids as well as bases to produce salts and water are known as amphoteric oxides.

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X + O_{2} \to Amphoteric Oxide

Q. is a metal which reacts with oxygen gas to form an amphoteric oxide.

The metals which can produce amphoteric oxides are:
(a) Sodium and aluminium (b) zinc and potassium (c) calcium and sodium (d) aluminium and zinc

Q. A metal

A

, which is used in thermite process, when heated with oxygen gives an oxide

B

, which is amphoteric in nature. Oxide

B

is:

Write the balanced chemical equations for the following reactions-

(a) Sodium carbonate on reaction with hydrochloric acid in equal molar concentration gives sodium chloride and sodium hydrogen carbonate.

(b) Sodium hydrogen carbonate on reaction with hydrochloric acid gives sodium chloride, water and liberates carbon dioxide.

(c) Copper sulphate on treatment with potassium iodide precipitates cuprous iodide $({Cu}_{2} I_{2})$ , liberates iodine gas and also forms potassium sulphate.

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A metal which gives amphoteric oxide on reaction with oxygen gas is

The correct option is B Al (Aluminium) Aluminium on reaction with oxygen, forms Al2O3. This metal oxide shows both acidic as well as basic behaviour. Such metal oxides which react with both acids as well as bases to produce salts and water are known as amphoteric oxides.

The correct option is B
Al (Aluminium)

Aluminium on reaction with oxygen, forms $A l_{2} O_{3}$ . This metal oxide shows both acidic as well as basic behaviour. Such metal oxides which react with both acids as well as bases to produce salts and water are known as amphoteric oxides.