Building Materials During smelting process, the combination of fuel in the furnace Carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2 Forms carbon dioxide Carbon dioxide with carbon forms carbon mono-oxide All listed here Carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2 Forms carbon dioxide Carbon dioxide with carbon forms carbon mono-oxide All listed here ANSWER DOWNLOAD EXAMIANS APP
Building Materials Knots in timber are Signs of branches cut off Defects caused by crushing fibres Speckled strains Splits radiating from the centre Signs of branches cut off Defects caused by crushing fibres Speckled strains Splits radiating from the centre ANSWER DOWNLOAD EXAMIANS APP
Building Materials Advantage of a clamp compared to a kiln for burning bricks is that It gives more output of first class bricks It is suitable when bricks are required in large numbers It takes less time for burning It has less initial cost It gives more output of first class bricks It is suitable when bricks are required in large numbers It takes less time for burning It has less initial cost ANSWER DOWNLOAD EXAMIANS APP
Building Materials Quick lime is(i) Slow in setting(ii) Rapid in slacking(iii) Good in strength Both (ii) and (iii) Only (i) Only (ii) Both (i) and (ii) Both (ii) and (iii) Only (i) Only (ii) Both (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Building Materials The cast iron when heated to red heat with powdered red haematite in an oven for increasing its toughness, is converted to Mottled cast iron Toughed cast iron Grey cast iron White cast iron Mottled cast iron Toughed cast iron Grey cast iron White cast iron ANSWER DOWNLOAD EXAMIANS APP
Building Materials The main function of alumina in brick earth is To impart plasticity To prevent shrinkage To make the brick impermeable To make the brick durable To impart plasticity To prevent shrinkage To make the brick impermeable To make the brick durable ANSWER DOWNLOAD EXAMIANS APP