Question

(a) Name two metals which resist corrosion due to the formation of a thin, hard and impervious layer of oxide on their surface.
(b) Name five methods of preventing rusting of iron.
(c) What are the constituents of stainless steel ? What are the special properties of stainless steel ?

Lakhmir Singh Chemistry Class 10

Answer 1

Answer:

• the two metal are ailuminum and zinc.
• galvanising
• coating a layer of chromium
• painting
• oiling
• greasing
• constituent of stainless steel: iron , nickel,chromium.
• special properties : stainless steel prevents rusting and is also hard

Answer 2

Answer:

a) aluminium and zinc.

b)1.by galvanisation.

2.painting

3.greasing

4.oiling

5.layering

c) stainleez steel contain nickel, chromium , iron.

. it prevents rusting and it is less reactive.

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