Chemical Process
A mineral is termed as 'ore', if

All of these
A metal can be economically extracted from it
It contains ≥ 40% metal
The metal present in it is costly

ANSWER DOWNLOAD EXAMIANS APP

Chemical Process
One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

Improve the rate of crystallisation of sugar
Adjust the pH of the syrup
Remove the coloring matter from the syrup
Reduce the viscosity of the syrup

ANSWER DOWNLOAD EXAMIANS APP

Chemical Process
Shaving soaps are

None of these
Soft potassium soaps (potassium salt of fatty acid) with free stearic acid to give lather a lasting property
Metalic soaps compounded with frothing agents
High free alkali soaps having excess of cane sugar and alcohol

ANSWER DOWNLOAD EXAMIANS APP