What is the correct answer?


In the Bayer's process, bauxite is digested under pressure using

A. H2SO4


C. NH3

D. HCl

Correct Answer :


Related Questions

__________ flux is used for the extraction of metal from its self fluxing… Half life of a radioactive isotope corresponds to the time required for… Reduction in the grain size reduces the __________ of the material. Which one can be directly solidified from gaseous state without entering… Thermistors are used in __________ devices. An alloy of Fe - 0.4 % C is Water flow in the river during flood can be categorised as the __________… The leaching solvent used in Baeyer's process for the purification of… The amount of water evaporated in kg per kg of fuel burnt in a boiler… In Imperial Smelting Process for extraction of zinc, zinc vapour thus… Magnesium is present in Stresses encountered in the metal forming processes are less than the… Atomic __________ of an element is a whole number. __________ wire is never used for making the heating element. Current employed in resistance welding ranges from __________ kVA/. Brazing is the joining of metals Metalloids Most of the phosphorous present in the blast furnace burden enters into High endurance limit of carburised machine parts is because of the fact… The wet bulb temperature is lower in dry air than in wet air at the same… A steam pipe is intended to be insulated with two layers of insulating… Limestone addition in the blast furnace is done to flux __________ present… Babbitt lining is used on brass/bronze bearings to increase the Fatigue limit improvement by over stressing the metal by successively… Thermodynamic cycle involved in the working of a thermal power plant is… Factor of safety in machine design is defined as the ratio of ultimate… Thermal diffusivity of a substance is proportional to (where, k = Thermal… __________ test determines the yield strength, Young's modulus of elasticity,… Out of the following __________ iron has the best capability to bear sudden… Brittleness induced due to the presence of sulphur in steel can be reduced…