Comminution

Trending Questions

Differentiate between “minerals” and “ores”.

All ores are minerals whereas all minerals are not ores – True or False?

all the minerals are not ores but all the ores are minerals. justify

Q. Assertion :Minerals are naturally occuring chemical substances in the earth's crust obtainable by mining. Reason: Minerals are also known as ores.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Assertion is correct but Reason is incorrect
Both Assertion and Reason are incorrect

The impurities present in mined ore are technically called

Q. The order of processes involved in the dressing of an ore are :
(i) grinding and crushing (ii) hand picking (iii) pulverization

Q. All ores are minerals whereas all minerals are not ores

All ores are minerals whereas all minerals are not ores – True or False?

Q. Fusion of

M n O_{2}

, with

K O H

in presence of

O_{2}

produces a salt

W

. Alkaline solution of

W

upon electrolytic oxidation yields another salt

X

. The manganese containing ions present in

W

and

X

, respectively are

Y

and

Z

. Correct statement(s) is (are)

In both $Y$ and $Z, α - b o n d i n g$ occurs between $p - o r b i t a l s$ of oxygen and d-orbitals of manganese
Both $Y$ and $Z$ are coloured and have tetrahedral shape
In aqueous acidic solution, $Y$ undergoes disproportionation reaction to give $Z$ and $M n O_{2}$
$Y$ is diamagnetic in nature while $Z$ is paramagnetic

Differentiate between “minerals” and “ores”.

Q. All ores are minerals whereas all minerals are not ores.