Chemistry Which one of the following is used for dating very old objects of archaeological importance? Phosphorus-31 Tritium Carbon-14 Radium Phosphorus-31 Tritium Carbon-14 Radium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is an iron ore ? Nitrite Magnetite Bauxite Lignite Nitrite Magnetite Bauxite Lignite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Philosopher’s wool is chemically Magnesium oxide Calcium oxide Aluminium oxide Zinc oxide Magnesium oxide Calcium oxide Aluminium oxide Zinc oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The elements in the modern Periodic table are arranged according to their Atomic number Mass number Atomic Weight Neutron number Atomic number Mass number Atomic Weight Neutron number ANSWER DOWNLOAD EXAMIANS APP
Chemistry An important green-house gas other than methane being produced from the agricultural fields is Arsine Ammonia Sulphur dioxide Nitrous oxide Arsine Ammonia Sulphur dioxide Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Permanent – hardness of water may be removed by addition of Potassium Permangante Alum Sodium carbonate Lime Potassium Permangante Alum Sodium carbonate Lime ANSWER DOWNLOAD EXAMIANS APP
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