Workshop Technology
The adhesiveness is the property of sand due to which

The sand grains stick together
None of these
It clings to the sides of a moulding box
It evolves a great amount of steam and other gases

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Workshop Technology
During hot working of metals

Grain structure of the metal is refined
All of the listed here
Mechanical properties are improved due to refinement of grains
Porosity of the metal is largely eliminated

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