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Quartz grains are generally fine or small in shape and size during analysis of quartz.

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in Casting-Forming-Welding I by (687k points)
Quartz grains are generally fine or small in shape and size during analysis of quartz.

(a) True

(b) False

I have been asked this question in an international level competition.

The origin of the question is Grain Size and Shape in section Molding and Core Sands of Casting-Forming-Welding I

1 Answer

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The correct option is (b) False

Easiest explanation: Quartz grains are generally coarse in size during analysis of quartz which is greatly affected by the solidification of quartz in the igneous rocks. The shape and surface characteristics reflect the mechanical and chemical effects after the releasing of grains. From chemical to mechanically controlling of shape, the transition part occurs between the particles of 50mm to 400mm size.

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