Chemistry Which one of the following elements is used in the manufacture of safety matches? Sodium Phosphorus Graphite Silicon Sodium Phosphorus Graphite Silicon ANSWER DOWNLOAD EXAMIANS APP
Chemistry When quick lime is added to water Heat is liberated Temperature decreases Heat is absorbed No heat change takes place Heat is liberated Temperature decreases Heat is absorbed No heat change takes place ANSWER DOWNLOAD EXAMIANS APP
Chemistry Who developed the model of atomic structure ? Alfred Nobel Bohr and Rutherford Volta Faraday Alfred Nobel Bohr and Rutherford Volta Faraday ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element used in the manufacture of safety matches is Silicon Sulphur Phosphorous Magnesium Silicon Sulphur Phosphorous Magnesium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The third shell of an atom can have a maximum of ______ electrons 13 21 18 15 13 21 18 15 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The percentage of nitrogen present in ammonium sulphate is : 0.18 0.25 0.305 0.27 0.18 0.25 0.305 0.27 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS