Chemistry What is the element that is in the highest percentage in the composition of the earth ? Iron Magnesium Silicon Oxygen Iron Magnesium Silicon Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Concentration of a material which is lethal to 50% animal is called NOAEL LD50 LC50 ADI NOAEL LD50 LC50 ADI ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following is pure matter ? Brass Carbon–dioxide Air Iron Brass Carbon–dioxide Air Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element used for making solar cells is Calcium Sodium Silicon Magnesium Calcium Sodium Silicon Magnesium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ? Hardness Acidity Alkalinity Eutrophication Hardness Acidity Alkalinity Eutrophication ANSWER DOWNLOAD EXAMIANS APP
Chemistry The major constituent of gobar gas is Carbon dioxide Methane Butane Isobutane Carbon dioxide Methane Butane Isobutane ANSWER DOWNLOAD EXAMIANS APP
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