Metallurgy Test...

Which of the following reactions correctly represents rusting process?

Which of the following gases evolves when concentrated sulphuric acid reacts with aluminium?

Which of the following is not a method of concentration of an ore?

Corrosion of which of the following compounds results in the formation of brown coloured compound?

Which of the following ores of iron, is present in hydrated form?

Which one of the following reactions does not take place in Hall Heroult process?

Which of the following substances can be called a solid solution in which a metal with a high concentration is solvent and other metals are solute?

Which of the following statements is not correct about aluminothermic process?

Which of the following statements is not correct about the factors affecting corrosion?

Which of the following statements is not correct about Hall Heroult`s process?

Which of the following is not a reason for making alloys?

Which of the following methods of refining is used for removing easily oxidisable impurites?

With which of the following substances will aluminum react to form aluminum oxide and hydrogen?

With which of the following substances does aluminum react to form iron, aluminium oxide and heat?

Consider the following reaction:
SiO₂ + CaCO₃  CaSiO₃ + CO₂
Which of the above substances can be called slag?

Which of the following reactions correctly represents carbon reduction process?

Which of the following processes helps steel retain its hardness but its brittleness vanishes?

Which of the following statements is not correct about characteristics of different alloys?

Which of the following statements is not correct about the chemical properties of aluminium?

Consider the following statements about calcination process:

(a) The ore is heated in the absence of air.
(b) In this process, CO₂ or water vapours are given off.
(c) Volatile impurities are removed.

Which of the above statements is/are true for calcination?