Q. Since wood is expensive for larger castings, __________ is used instead of a full pattern.

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Q. Which of the following is not a constituent of molding sand?

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Q. What makes the molding sand refractory?

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Q. How much clay does loam sand contain?

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Q. How much water does natural sand require?

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Q. Chilled castings are made by using _________

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Q. Why are Kaolinite and Bentonite used as clay in molding sand?

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Q. __________ additives improve the permeability of the molds.

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Q. The molding sand in moist state is named as __________

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Q. Which of the following is not a stage of mold preparation?

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Q. Phenolic resin and fine dry silica are mixed with ________ for shell mold casting.

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Q. In shell molding, the pattern and sand are inverted after _________

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Q. The molten wax in investment casting is at a pressure of _______

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Q. Which of these is a refractory powder used in ceramic mold casting?

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Q. Lost wax process is used for making items of ___________

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Q. Permanent mold casting is otherwise known as _____________

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Q. Centrifugal casting is used for making _________

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Q. How can cracks in casting be avoided?

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Q. In powder metallurgy, how is the powder for brittle materials prepared?

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Q. What is the disadvantage of atomization?

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