Chemistry Atoms of different elements have Same atomic number and same electronic configuration Same number of electrons and neutrons Different atomic number and same eletronic configu-ration Different atomic number and different number of valence electrons Same atomic number and same electronic configuration Same number of electrons and neutrons Different atomic number and same eletronic configu-ration Different atomic number and different number of valence electrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass is made of Copper and tin Copper and zinc Tin and lead Copper, tin and zinc Copper and tin Copper and zinc Tin and lead Copper, tin and zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry The atmospheric gas that is mainly responsible for Green House effect : Oxygen Carbondioxide Nitrogen Ozone Oxygen Carbondioxide Nitrogen Ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the element that is in the highest percentage in the composition of the earth ? Magnesium Silicon Oxygen Iron Magnesium Silicon Oxygen Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following elements is used in the manufacture of fertilizers ? Fluorine Lead Aluminium Potassium Fluorine Lead Aluminium Potassium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a gaseous air pollutant? Hydrocarbon Oxides of sulphur Oxides of nitrogen Smoke Hydrocarbon Oxides of sulphur Oxides of nitrogen Smoke ANSWER DOWNLOAD EXAMIANS APP
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