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39 questions
1
Alloys
Easy
+1.0
-0.33
Statement (A) : Galvanized iron does not rust. Statement (R) : Zinc has the efficiency of oxidation. Code :
2
Alloys
Easy
+1.0
-0.33
Galvanized iron pipes have a coating of :
3
Alloys
Easy
+1.0
-0.33
The plates of galvanized iron remain protected from rust because of –
4
Alloys
Easy
+1.0
-0.33
Galvanized iron is coated with –
5
Alloys
Easy
+1.0
-0.33
Which one of the following is essential in corrosion of iron metal?
6
Alloys
Easy
+1.0
-0.33
Which metal is generally used for coating of brass utensils to prevent copper contamination?
7
Alloys
Easy
+1.0
-0.33
Aluminium surface is often 'Anodized'. This means the deposition of a layer of –
8
Alloys
Easy
+1.0
-0.33
Alloy of which metal is used to make aeroplane and parts of the compartment of the train?
9
Alloys
Easy
+1.0
-0.33
Mercury-metal mixture is –
10
Alloys
Easy
+1.0
-0.33
Which one of the following metals does not form amalgam?