Chemistry The iron ore magnetite consists of FeCO3 3Fe2O3 .. 3H2O Fe3OH4 Fe2O3 FeCO3 3Fe2O3 .. 3H2O Fe3OH4 Fe2O3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following stage is suitable indicator when solution of sodium carbonate is mixed with sulphuric acid ? Phenolphthaline Methyl red Methyl orange Methylene blue Phenolphthaline Methyl red Methyl orange Methylene blue ANSWER DOWNLOAD EXAMIANS APP
Chemistry The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is 5x/36 7.2 x x/6 5x 5x/36 7.2 x x/6 5x ANSWER DOWNLOAD EXAMIANS APP
Chemistry Gypsum is used for improvement of: Alkaline soils Saline soils Acidic soils Podsols Alkaline soils Saline soils Acidic soils Podsols ANSWER DOWNLOAD EXAMIANS APP
Chemistry Two moles of an ideal gas expand freely into vacuum. The work done by the gas is 2J Infinity 4J 2J Infinity 4J ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal chiefly used for galvanising iron is : Zinc Tin Cadmium Mercury Zinc Tin Cadmium Mercury ANSWER DOWNLOAD EXAMIANS APP
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