Which of the following are correct for the concentration of an ore.

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

Leaching with acid is useful for the oxide or hydroxide or carbonate ores of metal

Floatation process is used for the mineral that will be wetted with oil more than by soapy water

Leaching with alkali is useful for the ores containing amphoteric or acidic oxide of the metal

Panning or gravitation method is adopted when the desired mineral must be much more dense than gangue.

answer is A, B, C, D.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

Ores containing amphoteric metal oxide which dissolve in alkalies can be concentrated by leaching with alkali where ore dissolves leaving behind impurities in solid state. Same is with acid leaching but the ore should contain basic metal oxide or hydroxide or carbonate.
Froth flotation method for the concentration of ore depends on wettability of impurity and wettability of ore particles which are coated with an oil.
In gravitation method the lighter impurities are washed away by running water while the minerl is left behind.

Watch 3-min video & get full concept clarity