Chemistry Main source of lead pollution is from Sewage Leaded gasoline Tobacco Insecticides Sewage Leaded gasoline Tobacco Insecticides ANSWER DOWNLOAD EXAMIANS APP
Chemistry Galena is a mineral of Calcium Iron Gold Lead Calcium Iron Gold Lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry One of the following is used to dissolve noble metals. That is Sulphuric acid Nitric acid Aqua ragia Hydrochloric acid Sulphuric acid Nitric acid Aqua ragia Hydrochloric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Dry ice is the solid form of : Air Carbon di–oxide Water Nitrogen Air Carbon di–oxide Water Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mass of one Avogadro number of helium atom is 4 x 6.02 x 1023 gram 4.00 gram 8.00 gram 1.00 gram 4 x 6.02 x 1023 gram 4.00 gram 8.00 gram 1.00 gram ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one is a naturally occuring noble gas Sodium Potassium Argon Boron Sodium Potassium Argon Boron ANSWER DOWNLOAD EXAMIANS APP