Why should the moulding sand be porous?
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Which of the following is not a defect if permeability is not enough?
In green sand what is the amount of water used?
What is the amount of clay needed in green sand?
Parting sand is a type of moulding sand.
Which of the following is not refractory sand?
Which refractory sand has the best moulding material?
Ganister is another name for which sand?
At what temperature, does quartz melt completely?
Which of the following is the most porous sand?
At what temperature does the silica sand start expanding thermally?
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