Building Materials Based on its dry weight, a freshly felled tree may contain water 100 % 75 % 25 % 50 % 100 % 75 % 25 % 50 % ANSWER DOWNLOAD EXAMIANS APP
Building Materials The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively: 10, 15, 75 15, 75, 10 10, 75, 15 75, 10, 15 10, 15, 75 15, 75, 10 10, 75, 15 75, 10, 15 ANSWER DOWNLOAD EXAMIANS APP
Building Materials The age of a tree can be known by examining Medullary rays Cambium layer Heart wood Annular rings Medullary rays Cambium layer Heart wood Annular rings ANSWER DOWNLOAD EXAMIANS APP
Building Materials Crushing strength of a good building stone should be more than 50 MPa 100 MPa 150 MPa 200 MPa 50 MPa 100 MPa 150 MPa 200 MPa ANSWER DOWNLOAD EXAMIANS APP
Building Materials The main ingredients of Portland cement are Lime and silica Silica and alumina Lime and alumina Lime and iron Lime and silica Silica and alumina Lime and alumina Lime and iron ANSWER DOWNLOAD EXAMIANS APP
Building Materials Gneiss is obtained from Sedimentary rocks Sedimentary metamorphic rocks Metamorphic rocks Igneous rocks Sedimentary rocks Sedimentary metamorphic rocks Metamorphic rocks Igneous rocks ANSWER DOWNLOAD EXAMIANS APP
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