Calcium carbide reacts with moisture to give out which gas?
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In a moisture content test, what amount of prepared sand is placed on the pan?
In a moisture content test, how is the prepared sand heated?
In a moisture content test, for how long should the sand in infrared heating bulb be heated?
How much distilled water is added to 3% NaOH solution in clay content determination of molding sand?
Grain distribution is not determined by the Grain fineness test.
Permeability of molding sand does not depend on which of the following factors?
Which of the following is not a function of a core?
Cores are subjected to severe thermal and mechanical conditions.
Which of the following is a function of a core in casting?
A permeability of a core should be _________
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