Building Materials Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth? Silica and alkalies Lime stone and alumina Alumina and iron Alkalies and magnesium Silica and alkalies Lime stone and alumina Alumina and iron Alkalies and magnesium ANSWER DOWNLOAD EXAMIANS APP
Building Materials The compound of Portland cement which reacts immediately with water and also sets first is Tri-calcium silicate Di-calcium silicate Tetra calcium alumino ferrite Tri-calcium aluminate Tri-calcium silicate Di-calcium silicate Tetra calcium alumino ferrite Tri-calcium aluminate ANSWER DOWNLOAD EXAMIANS APP
Building Materials Proper amount of entrained air in concrete results in (i) Better workability (ii) Better resistance to freezing and thawing (iii) Lesser workability (iv) Less resistance to freezing and thawing (ii) and (iii) (i) and (iv) (iii) and (iv) (i) and (ii) (ii) and (iii) (i) and (iv) (iii) and (iv) (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Building Materials Slacking of lime is affected by Keeping it exposed to air Immersing the lime in water None of these Crushing the lime lumps Keeping it exposed to air Immersing the lime in water None of these Crushing the lime lumps ANSWER DOWNLOAD EXAMIANS APP
Building Materials For a good building stone, its specific gravity should the greater than 3.7 2.3 2.5 2.7 3.7 2.3 2.5 2.7 ANSWER DOWNLOAD EXAMIANS APP
Building Materials After storage, the strength of cement Increases Decreases May increase or decrease Remains same Increases Decreases May increase or decrease Remains same ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS