BASIC MOULDING MATERIALS MCQs – CHAPTER 2 DAE

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1. . The chemical formula of silica sand is





2. . Olivine sand is popular in





3. . The sand which has the highest fusion point of all the base sands





4. . Sand which is used to keep the green sand not to stick to the pattern is





5. . The sand next to the surface of the pattern and forms the face of the mould cavity is





6. . The used sand is cleaned and re-activated by the addition of water and special additives are called





7. . Sand grains give poor bonding strength as compared





8. . Sand grains gives good surface finish but possesses low permeability





9. . Earthy material that is plastic when moist but hard when fired





10. . The amount of moisture content in the molding sand varies from





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