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 (i) and (iv) (i) and (ii) (ii) and (iii) (iii) and (iv) (i) and (iv) (i) and (ii) (ii) and (iii) (iii) and (iv) ANSWER DOWNLOAD EXAMIANS APP
Building Materials The age of a tree can be known by examining Heart wood Annular rings Cambium layer Medullary rays Heart wood Annular rings Cambium layer Medullary rays ANSWER DOWNLOAD EXAMIANS APP
Building Materials The type of steel used for precision levelling staff, is Carbon steel Invar Titanium steel Stainless steel Carbon steel Invar Titanium steel Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Building Materials In the method of condensation polymerization, The reaction proceeds with an evolution of ammonia All of these The reaction proceeds with an evolution of hydrogen chloride Low-molecular substances are removed from the high molecular substance The reaction proceeds with an evolution of ammonia All of these The reaction proceeds with an evolution of hydrogen chloride Low-molecular substances are removed from the high molecular substance ANSWER DOWNLOAD EXAMIANS APP
Building Materials The thermosetting plastic Becomes rigid when moulded at suitable pressure and temperature Chars at 343°C All listed here At 127°C to 177°C permanently set and further application of heat does not soften it Becomes rigid when moulded at suitable pressure and temperature Chars at 343°C All listed here At 127°C to 177°C permanently set and further application of heat does not soften it ANSWER DOWNLOAD EXAMIANS APP
Building Materials The main ingredients of Portland cement are Lime and alumina Silica and alumina Lime and silica Lime and iron Lime and alumina Silica and alumina Lime and silica Lime and iron ANSWER DOWNLOAD EXAMIANS APP
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