Chemistry Which one of the following is used for dating very old objects of archaeological importance? Phosphorus-31 Radium Carbon-14 Tritium Phosphorus-31 Radium Carbon-14 Tritium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The elements with atomic numbers 9, 17, 35, 53, 85 are all Halogens Noble gases Light metals Heavy metals Halogens Noble gases Light metals Heavy metals ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemicals is used in photography ? Silver bromide Aluminium hydroxide Sodium chloride Potassium nitrate Silver bromide Aluminium hydroxide Sodium chloride Potassium nitrate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical formula of washing soda is Na2CO3.10H2O NaHCO3 Na2SO4.10H2O Ca(OH)2 Na2CO3.10H2O NaHCO3 Na2SO4.10H2O Ca(OH)2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Colour imparted to the Bunsen flame by strontium salt is Crimson red Brick red Bluish green Apple-green Crimson red Brick red Bluish green Apple-green ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a monoatomic gas? Fluorine Nitrogen Neon Oxygen Fluorine Nitrogen Neon Oxygen ANSWER DOWNLOAD EXAMIANS APP
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