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The process of coating iron or steel sheet with a thin coat of zinc to prevent iron from rusting is called ____________
In a certain code language, Copper is called Iron, Iron is called Sodium, Sodium is called Mercury, Mercury is called Zinc, Zinc is called Aluminium, Aluminium is called Silver and Silver is called Platinum. In this language, which of the following is a liquid metal?
Mr. Mukesh is a trader having products A and B. A contains 40% iron and 60% zinc, and product B contains 35% iron, 40% zinc and 25% bronze. If products A and B are mixed in the ratio 1 : 4, then what percentage of iron and zinc will be present in the newly made product respectively?
Which of the following statements is/are correct? A. Iron can replace zinc from zinc sulphate solution. B. Zinc can replace copper from copper sulphate solution. C. Copper can replace Iron from Iron sulphate solution.
Which of the following are not chemical changes? 1. Tempering of iron 2. Conversion of the iron piece into an electro-magnet by passing the current around the iron 3. Melting of iron 4. Rusting of iron Select the correct answer using the code given below:
In which process is a protective zinc coating applied on iron to prevent it from rusting?
Two alloys of zinc and copper are combined in the ratio 3 : 5 by volume. The resultant alloy is a 45% zinc alloy. What will be the proportion of zinc in the first alloy if the proportion of zinc in the second is 70%?
Consider the following statements
1. Galvanisation is the method of protecting steel and iron fromrusting by coating them with a thin layer of zinc.
2. Pure iron is very soft but if it is mixed with a small amount of carbon, it becomes hard and strong.
3. When iron is mixed with nickel and chromium, we get stainless steel, which is hard and does not rust.
Which of the statements given above are correct?
Protection of ship hulls against sea water corrosion is done by coating with zinc because of the fact that zinc compared to iron is
Which one of the following alloys is not properly matched with regard to its composition? Alloy Composition (1) Brass Copper and zinc (2) solder Lead and Zinc (3) Gunmetal Copper, Tin, and Zinc (4) Nichrome Nickel, Iron, and Chromium