Question

1) metallurgy involves a) concentration of ore b) reduction of ore c) purification d)all 2) among the following which is not a concentration technique you a) hand picking b) forth floatation c) hydralic washing d) distillation​

Answer 1

Answer:

1) d) all

2)d) distillation

Answer 2

Answer:

1.(d)

2.(d)

Explanation:

ADDITIONAL DETAILS

1. Concentration :- It involves the process of increasing the concentration of required mineral in ore by decreasing the concentration of impurities.
2. Reduction of ores :- It involves reduction of ores either by calcination and roasting.
3. Purification :- It involves further refining of the mineral :- Example :- Zone refining, Liquation,Distillation.
4. Distillation is not a concentration technique,it is a refining technique.

Regards

Kshitij