Building Materials When a brick is immersed in water for 24 hours and then dried, if 10 percent surface is covered with grey or white deposits, the brick has slight efflorescence No grey or white deposits appear on the surface, the brick is free from soluble salts All listed here 50 percent surface is covered with grey or white deposits, the brick has serious efflorescence 10 percent surface is covered with grey or white deposits, the brick has slight efflorescence No grey or white deposits appear on the surface, the brick is free from soluble salts All listed here 50 percent surface is covered with grey or white deposits, the brick has serious efflorescence ANSWER DOWNLOAD EXAMIANS APP
Building Materials Bitumen is generally obtained from Synthetic material Petroleum product Coal Organic material Synthetic material Petroleum product Coal Organic material ANSWER DOWNLOAD EXAMIANS APP
Building Materials The age of a tree can be known by examining Heart wood Medullary rays Annular rings Cambium layer Heart wood Medullary rays Annular rings Cambium layer ANSWER DOWNLOAD EXAMIANS APP
Building Materials Cast iron contains carbon approximately 1.5% to 5.5% None to these 0.05% to 1.75% 0.250 % 1.5% to 5.5% None to these 0.05% to 1.75% 0.250 % ANSWER DOWNLOAD EXAMIANS APP
Building Materials Sapwood consists of Portion of timber between heartwood and cambium layer Thin layers below the bark Innermost annular rings around the pith Thin fibre which extends from the pith outwards and holds the annular rings together Portion of timber between heartwood and cambium layer Thin layers below the bark Innermost annular rings around the pith Thin fibre which extends from the pith outwards and holds the annular rings together ANSWER DOWNLOAD EXAMIANS APP
Building Materials The portion of a brick cut to form angles other than right angles in plan, is known as Queen closer King closer Squint brick Closer Queen closer King closer Squint brick Closer ANSWER DOWNLOAD EXAMIANS APP
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