Materials and Construction Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with Rubber Karbate Lead or acid-proof bricks Acidic refractory Rubber Karbate Lead or acid-proof bricks Acidic refractory ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Plastics are Used in very high temperature applications Not suitable for drainage pipe manufacture Non-biodegradable All of these Used in very high temperature applications Not suitable for drainage pipe manufacture Non-biodegradable All of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Maximum carbon content in any variety of steel can be upto 1.3%. Steel containing 0.4% Carbon is not used for making Studs Bolts Nuts Chiesels Studs Bolts Nuts Chiesels ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Lead is Not used as pigment (in its compound forms) for paints Not resistant to corrosion Used as a shock absorber (in mattress form) between the foundation an steel framework of skyscrapper buildings Used as a cathodic material Not used as pigment (in its compound forms) for paints Not resistant to corrosion Used as a shock absorber (in mattress form) between the foundation an steel framework of skyscrapper buildings Used as a cathodic material ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Polythene (low or high density) containers are not corroded by Nitric acid (95%) at room temperature Sulphur trioxide at 60°C Sulphuric acid (10%) at room temperature Any of these Nitric acid (95%) at room temperature Sulphur trioxide at 60°C Sulphuric acid (10%) at room temperature Any of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction __________ is a donor impurity for semi-conductors. Antimony Gallium None of these Boron Antimony Gallium None of these Boron ANSWER DOWNLOAD EXAMIANS APP
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