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Standard X

Chemistry

Corrosion

Corrosion is ...

Question

Corrosion is electro-chemical oxidation of metals in reaction with an oxidant such as oxygen. Aluminium surface are often' anodized'. This means the deposition of a layer of

chromium oxide

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aluminium oxide

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nickel oxide

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zinc oxide

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Solution

The correct option is D zinc oxide
Option: (d)

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Similar questions

Q. The reaction given below represent the processes of reduction to obtain metals from their respective ores.
Arrange them in the following order.
Sodium, aluminium, zinc, chromium, iron, copper and mercury
(a) Metal oxide

+

metal sulphide

\to

Metal

+ {S O}_{2}

(b) Metal oxide

+ C O \to

Metal

+ {C O}_{2}

+ C \to

Metal

+ C O

(d) Metal oxide

\to

Metal

+ O_{2}

(e) Metal oxide

Δ - \to

Metal

+ O_{2}

(f) Metal oxide

+

Aluminium

\to

Aluminium oxide

+

metal
(g) Metal chloride

\to

Metal

+

Chlorine

(a) Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
(b) What special name is given to substances like aluminium oxide?
(c) Name another metal oxide which behaves like aluminium oxide.

Q. For joining railway tracks, ferric oxide is reacted with aluminium to produce aluminium oxide and iron. The balanced chemical equation for the given reaction is

F e_{2} O_{3 (x)} F e r r i c o x i d e + 2 A l_{(x)} A l u m i n i u m \to A l_{2} O_{3 (x)} A l u m i n i u m o x i d e + 2 F e_{(x)} I r o n

Which of the following substances is oxidized in the given reaction?

Ferric oxide reacts with aluminium to produce aluminium oxide and iron. The balanced chemical equation for the given reaction is :

$F e_{2} O_{3}$ + $2 A l$ $\to$ $A l_{2} O_{3}$ + $2 F e$

Which of the following substances is oxidized in the given reaction?

Q. Choose the correct answer:
The metal oxide which can react with acid as well as alkali is:
(a) Silver oxide
(b) Copper (II) oxide
(c) Aluminium oxide
(d) Calcium oxide

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Corrosion is electro-chemical oxidation of metals in reaction with an oxidant such as oxygen. Aluminium surface are often' anodized'. This means the deposition of a layer of

The correct option is D zinc oxide Option: (d)

The correct option is D zinc oxide
Option: (d)