Chemistry What is the element that is in the highest percentage in the composition of the earth ? Oxygen Magnesium Iron Silicon Oxygen Magnesium Iron Silicon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following contributes largely to the ‘green house effect’ ? Ozone Carbon monoxide Carbon dioxide Water vapour Ozone Carbon monoxide Carbon dioxide Water vapour ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ? Propane Methane Ethane Butane Propane Methane Ethane Butane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used as a lubricant in heavy machines? Sulphur Bauxite Phosphorus Graphite Sulphur Bauxite Phosphorus Graphite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical formula of washing soda is Na2CO3.10H2O Ca(OH)2 Na2SO4.10H2O NaHCO3 Na2CO3.10H2O Ca(OH)2 Na2SO4.10H2O NaHCO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chernobyl disaster is the result of pollution by Radioactive waste Acid rain Carbon dioxide Oil spill Radioactive waste Acid rain Carbon dioxide Oil spill ANSWER DOWNLOAD EXAMIANS APP
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