61. For one cubic metre of brick masonry, number of bricks required, is
62. The maximum quantity of calcium chloride used as an accelerator in cement in percentage by weight of cement is
63. The weight of a good quality brick when immersed in water for a period of 16 hours should not exceed the weight of dry brick
64. Seasoning of timber is done for
65. The initial setting time of lime-pozzolana, is
66. Priming consists of
67. The main function of alumina in brick earth is
68. A well seasoned timber may contain moisture up to
69. The commonly used thinner in oil paints, is
70. Most commonly used solvent in oil paints, is
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