is heamatite ore concerned by hand picking method give reason
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is heamatite ore concerned by hand picking method give reason
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Answer:
HAND PICKING:
In our daily lives we come across so many situations in which we have to separate some substances from a mixture in order to get a suitable substance for use. Some substances are easily separable just by taking out the impurities with hand. This method of separation is known as hand-picking. But some of them cannot be removed by hand, and we need some other methods of separation for such mixtures.

For example: In our house, our mother separates stones and insects from rice simply by hand. But in case of tea and tea leaves, the method of hand-picking is not sufficient for the separation and a filter is required. Thus, we can say that there are different methods to separate different mixtures depending upon the constituents of the mixture and the final product required. Some of these methods are carried out in dry conditions while some of them are carried in wet conditions.
Complete answer:
There are different methods of concentration that include leaching,froth flotation,gravity separation etc. Let us discuss one after the other. Gravity separation method is used when there is huge difference in the specific gravities of ore and associated impurities. Hence used for concentrating heavy oxide ore. Froth floatation is mainly used for sulphide minerals,so you can eliminate this option. Amalgamation is done using mercury where you combine two or more entities into a new one. Hand picking is done where the impurities can be seen with the naked eye such as separation stones from rice. Haematite ore is a combination of Iron and oxide and also it is a heavy mineral oxide. Hence, gravity separation is used.
∴ Haematite ore is concentrated by “Gravity separation method”.
Explanation:
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