Construction Materials

11) Quartitze is a

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silicious rock

12) Which of the following metamorphic rocks has the most weather resisting characteristics?

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quartzite

13) Which of the following has more fire resisting characteristics?

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compact sand stone

14) The predominant constituent which responsible for strength in granite is is

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quartz

15) Which of the following sedimentary rocks changes into quartzite by metamorphic action?

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sand stone

16) Slate is formed by metamorphic action on

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shale

17) Which of the following is a mineral?

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quartz

18) Which of the following is a rock?

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gypsum

19) Granite is not suitable for ordinary building purpose because

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it is costly

20) Based on the following rocks and minerals, select the correct statement. quartz, shale, basalt, granite, marble, gypsum, mica

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quartz and mica are minerals

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