Chemistry Which one of the following elements is used in the manufacture of safety matches? Phosphorus Sodium Silicon Graphite Phosphorus Sodium Silicon Graphite ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main buffer system of the human blood is CH3COOH - CH3COO- H2CO3 - CO32- NH2CONH2 - NH2CONH+ H2CO3 - HCO3 CH3COOH - CH3COO- H2CO3 - CO32- NH2CONH2 - NH2CONH+ H2CO3 - HCO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Element 106 was discovered by Lawrence Seaborg Kurchatove Rutherford Lawrence Seaborg Kurchatove Rutherford ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of these acids is not organic in origin? Sulphuric acid Citric acid Lactic acid Oxalic acid Sulphuric acid Citric acid Lactic acid Oxalic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry The acid rain destroys vegetations because it contains Nitric acid Carbon monoxide Sulphuric acid Ozone Nitric acid Carbon monoxide Sulphuric acid Ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry How many neutrons are there in 92U238 atom ? 238 92 146 330 238 92 146 330 ANSWER DOWNLOAD EXAMIANS APP
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