Building Materials Which of the following represents a metamorphic rock?(i) Slate(ii) Shale(iii) Quartzite All (i), (ii) and (iii) Only (iii) Both (i) and (iii) Both (ii) and (iii) All (i), (ii) and (iii) Only (iii) Both (i) and (iii) Both (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Building Materials In the method of condensation polymerization, The reaction proceeds with an evolution of ammonia Low-molecular substances are removed from the high molecular substance The reaction proceeds with an evolution of hydrogen chloride All of these The reaction proceeds with an evolution of ammonia Low-molecular substances are removed from the high molecular substance The reaction proceeds with an evolution of hydrogen chloride All of these ANSWER DOWNLOAD EXAMIANS APP
Building Materials The preparation of surface of stone to obtain plain edges or to obtain stones of required size and shape is known as Quarrying of stones Dressing of stones Seasoning of stones Blasting of stones Quarrying of stones Dressing of stones Seasoning of stones Blasting of stones ANSWER DOWNLOAD EXAMIANS APP
Building Materials The practical limit of moisture content achieved in air drying of timber is 35 % 15 % 5 % 25 % 35 % 15 % 5 % 25 % ANSWER DOWNLOAD EXAMIANS APP
Building Materials For the manufacture of Portland cement, the proportions of raw materials used, are Lime 22% ; silica 63% ; other ingredients 15% Lime 63% ; silica 22% ; other ingredients 15% Silica 70% ; lime 20% ; other ingredients 10% Silica 40% ; lime 40% ; other ingredients 20% Lime 22% ; silica 63% ; other ingredients 15% Lime 63% ; silica 22% ; other ingredients 15% Silica 70% ; lime 20% ; other ingredients 10% Silica 40% ; lime 40% ; other ingredients 20% ANSWER DOWNLOAD EXAMIANS APP
Building Materials The constituent of cement which is responsible for all the undesirable properties of cement is Tri-calcium aluminate Di-calcium silicate Tetra calcium alumino ferrite Tri-calcium silicate Tri-calcium aluminate Di-calcium silicate Tetra calcium alumino ferrite Tri-calcium silicate ANSWER DOWNLOAD EXAMIANS APP
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