Very low concentration of DNA of pathogen can be amplified and hence diagnosis becomes easy. Which method is suit-able for this method?

The ore of a metal is lighter than the impurities. Which method is suitable for its concentration?

The impurities present in the ore have high density and the ore has low density. Which method is used to seperate this ore.

Which of the following equations can't be obtained by the dimensional method? (k is a constant)

Froth flotation process, hydraulic washing, magnetic separation, leaching etc are some methods for concentration of ores? Which of this methods is useful for the separation of copper pyrites? b) Write the reason for choosing this method.

Many minerals are present in ordinary water. Distillation is the method that can be used to remove the minerals and obtain pure water. In which type of mixtures is this method employed?

The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

One of the steps in metallurgyis concentration of ores. Majority of the concentration technique are physical in nature. But there Is a chemical method of concentration of ores.Give a metal ore which can be concentrated by chemical methods.