Chemistry Which one of the following minerals is found in pure form? Manganese Copper Bauxite Iron Manganese Copper Bauxite Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas that usually causes explosions in coal mines is Carbon monoxide Methane Air Hydrogen Carbon monoxide Methane Air Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following molecules has a bond order of 2.5 F2 NO CO HCL F2 NO CO HCL ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals does not react with water to produce Hydrogen ? Cadmium Lithium Potassium Sodium Cadmium Lithium Potassium Sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium vapour lamps glow with yellow colour. This is due to The low ionisation energy of sodium The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum Its ability to absorb all other colours except yellow sublimation of sodium to emit yellow colour The low ionisation energy of sodium The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum Its ability to absorb all other colours except yellow sublimation of sodium to emit yellow colour ANSWER DOWNLOAD EXAMIANS APP
Chemistry PH scale ranges from 8 – 14 0 – 14 None 0 – 7 8 – 14 0 – 14 None 0 – 7 ANSWER DOWNLOAD EXAMIANS APP
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