A first class brick when immersed in cold water for 24 hours should not absorb water more than
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A good building stone should not absorb water more than
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Basalt is
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Age of a tree may be ascertained by
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Which one of the following is an air binding material?
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Bitumen felt
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Based on the following rocks and minerals, select the correct statement, quartz, shale, basalt, granite, marble, gypsum, mica
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Blister steel
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Cast iron contains carbon approximately
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Steel contains carbon approximately
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Fibre boards can be
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The process of mixing clay, water and other ingredients to make brick is known as
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Which of the following cements contains maximum percentage of dicalcium silicate?
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Cast iron . . . . . . . .
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Soundness test of cement determines
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Which of the following cements is suitable for use in massive concrete structures such as large dams?
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The internal size of mould used in brick preparation is
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The stretcher bond in brick masonry can be used only when the thickness of wall is
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The slump recommended for mass concrete is about
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Second class bricks
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