Question

A metal X which is resistant to corrosion is produced by the electrolysis of its molten oxide whereas another metal Y which is also resistant to corrosion is produced by the reduction of its oxide with carbon. Metal X can be used in powder form in thermite welding whereas metal Y is used in making cathodes of ordinary dry cells.
(a) Name the metals X and Y.
(b) Which of the two metals is more reactive : X or Y ?
(c) Name one ore or metal X. Also write its chemical formula.
(d) Name one ore of metal Y. Also write its chemical formula.
(e) Name one alloy of metal X and one alloy of metal Y.

Lakhmir Singh Chemistry Class 10

Answer 1

Answer:

metal x is aluminium

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Answer 2

Explanation:

a) Metal x is Aluminium and Metal y is zinc.Since,Aluminium and Zinc are resistant to corrosion

b)Aluminium is more reactive than zinc.Since, Aluminium is placed above than zinc in reactivity series.

c)Bauxite is the main ore of Aluminium and it's chemical formula is $Al_{2}o_{3}.nH_{2}o$

d)Calamine is the ore Zinc.it's formula is $Fe_{2}O_{4}Zn.$

e)Alloy of Zinc is Brass which consists of Zinc and Copper.Alloy of Aluminium is Duralumin which consists of Aluminium and copper.