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 All listed here 50 percent surface is covered with grey or white deposits, the brick has serious efflorescence No grey or white deposits appear on the surface, the brick is free from soluble salts 10 percent surface is covered with grey or white deposits, the brick has slight efflorescence All listed here 50 percent surface is covered with grey or white deposits, the brick has serious efflorescence No grey or white deposits appear on the surface, the brick is free from soluble salts ANSWER DOWNLOAD EXAMIANS APP
Building Materials The coefficient of hardness of stones used in road work should be greater than 15 10 17 12 15 10 17 12 ANSWER DOWNLOAD EXAMIANS APP
Building Materials Age of a tree may be ascertained by Number of branches Circumference of its stem Radius of its stem Number of annual rings Number of branches Circumference of its stem Radius of its stem Number of annual rings ANSWER DOWNLOAD EXAMIANS APP
Building Materials The term frog means A depression on a face of brick Soaking brick in water An apparatus to lift the stone Vertical joint in a brick work A depression on a face of brick Soaking brick in water An apparatus to lift the stone Vertical joint in a brick work ANSWER DOWNLOAD EXAMIANS APP
Building Materials If āPā is the percentage of water required for normal consistency, water to be added for determination of initial setting time, is 0.70 P 0.80 P 0.75 P 0.85 P 0.70 P 0.80 P 0.75 P 0.85 P ANSWER DOWNLOAD EXAMIANS APP
Building Materials Initial setting time of cement for asbestos cement products should be not less than 50 minutes 30 minutes 75 minutes 90 minutes 50 minutes 30 minutes 75 minutes 90 minutes ANSWER DOWNLOAD EXAMIANS APP
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