Chemistry Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water Manganese Calcium None of these Magnesium Manganese Calcium None of these Magnesium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Formic acid is produced by White ants Cockroaches Red ants Mosquitoes White ants Cockroaches Red ants Mosquitoes ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following is not a characteristic of transition metals? Low ionization energy Malleability Low electronegativity Tendency to gain electrons Low ionization energy Malleability Low electronegativity Tendency to gain electrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Hard water and soft water can be distinguished by using Ordinary soap Dilute acid Liquid soap Detergent Ordinary soap Dilute acid Liquid soap Detergent ANSWER DOWNLOAD EXAMIANS APP
Chemistry Biofertilizers convert nitrogen to ________ . Nitrates Amino acids Nitrogenase Ammonia Nitrates Amino acids Nitrogenase Ammonia ANSWER DOWNLOAD EXAMIANS APP
Chemistry The polymerisation of which often following is used in manufacturing of polythene in industry ? Styrene Methane Acetylene Ethylene Styrene Methane Acetylene Ethylene ANSWER DOWNLOAD EXAMIANS APP
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