Which method is most suitable to enrich the sulphide ores ?

The method suitable for concentration of the sulphide ores is

Which method is suitable to separate salt from sea water?

(A) : Osmotic pressure method is the most suitable method to determine the number average molecular masses of polymers. (R) : Osmotic pressure can be accurately determined for polymer of high molecular mass as it is a colligative property.

For smelting the most suitable furnace is

Which of the folloing is ore extracted from sulphide ores?

Which of the following is not sulphide ore ?

Which of the following is most suitable method for removing the traces of water from ethanol ?

The sulphide ore of iron is

………method is in use for removing gangue form sulphide ores.

At a site, low grade copper ores are avilable and Zinc and iron scraps are also avilable . Which of the two scraps would be more suitable for reducing the leached copper ore and why?