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Physical Properties of Metals

Hardness of g...

Question

Hardness of green sand mould increases with

A

increase in moisture content beyond 6 percent

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B

increase in permeability

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C

decrease in permeability

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D

increases in both moisture content and permeability

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Solution

The correct option is C decrease in permeability
Hardness of green sand mould increases with decrease in permeability.

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