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 (iii) and (iv) (i) and (ii) (i) and (iv) (ii) and (iii) (iii) and (iv) (i) and (ii) (i) and (iv) (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Building Materials Which of the following represents a metamorphic rock? (i) Slate (ii) Shale (iii) Quartzite Both (ii) and (iii) Both (i) and (iii) All (i), (ii) and (iii) Only (iii) Both (ii) and (iii) Both (i) and (iii) All (i), (ii) and (iii) Only (iii) ANSWER DOWNLOAD EXAMIANS APP
Building Materials Brass is an alloy of Tin and silver Copper and zinc Zinc and lead Zinc and nickel Tin and silver Copper and zinc Zinc and lead Zinc and nickel ANSWER DOWNLOAD EXAMIANS APP
Building Materials The usual percentages of clay and metal in cermet are: 70%, 30% 60%, 40% 80%, 20% 50%, 50% 70%, 30% 60%, 40% 80%, 20% 50%, 50% ANSWER DOWNLOAD EXAMIANS APP
Building Materials The basic purpose of a retarder in concrete is To decrease the initial setting time of cement paste in concrete To render the concrete more water tight To improve the workability of concrete mix To increase the initial setting time of cement paste in concrete To decrease the initial setting time of cement paste in concrete To render the concrete more water tight To improve the workability of concrete mix To increase the initial setting time of cement paste in concrete ANSWER DOWNLOAD EXAMIANS APP
Building Materials The internal size of mould used in brick preparation is Greater than the size of a fully burnt brick Equal to the size of a fully burnt brick Smaller than the size of a fully burnt brick None of these Greater than the size of a fully burnt brick Equal to the size of a fully burnt brick Smaller than the size of a fully burnt brick None of these ANSWER DOWNLOAD EXAMIANS APP
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