Chemistry Which one of the following is used for dating very old objects of archaeological importance? Phosphorus-31 Carbon-14 Radium Tritium Phosphorus-31 Carbon-14 Radium Tritium ANSWER DOWNLOAD EXAMIANS APP
Chemistry PH scale ranges from 8 – 14 0 – 7 0 – 14 None 8 – 14 0 – 7 0 – 14 None ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following has no unit Electron affinity Electronegativity Ionization energy Excitation potential Electron affinity Electronegativity Ionization energy Excitation potential ANSWER DOWNLOAD EXAMIANS APP
Chemistry The manufacture of iron from iron ore involves the process of Fractional distillation Reduction Oxidation Electrolysis Fractional distillation Reduction Oxidation Electrolysis ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is a common name for the substance which irritates lachrymal glands ? Anaesthetic Gas Tear Gas Noble Gas Laughing Gas Anaesthetic Gas Tear Gas Noble Gas Laughing Gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry How many neutrons are there in 92U238 atom ? 238 146 92 330 238 146 92 330 ANSWER DOWNLOAD EXAMIANS APP
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