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1. Multiple choice questions.0 Which one of the following are the two main constituents of granite?(a) Iron and nickel(b) Iron and silver(c) Silica and aluminium(d) Iron Oxide and potassium(t) Which one of the following is the salient feature of metamorphic rock(a) Changeable(b) Quite(c) Crystalline(d) Foliation |
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Answer» 1. c. Alumina and silica Granite is a hard, coarse-grained rock making up most of the earth. It consists chiefly of three minerals: quartz,alkali feldspar(which contain alumina and silica) and plagioclase feldspar (which contain sodium and calcium) 2. a. changeable Metamorphic rocks were once igneous or sedimentary rocks, but have been changed (metamorphosed) as a result of intense heat and/or pressure within the Earth's crust |
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