Chemistry Which one of the following is used for dating very old objects of archaeological importance? Radium Phosphorus-31 Tritium Carbon-14 Radium Phosphorus-31 Tritium Carbon-14 ANSWER DOWNLOAD EXAMIANS APP
Chemistry In which of the following substances all carbon atoms are quaternary in nature ? Graphite Napthalene Teflon Diamond Graphite Napthalene Teflon Diamond ANSWER DOWNLOAD EXAMIANS APP
Chemistry When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is Hydrogen Carbon dioxide Oxygen All of them Hydrogen Carbon dioxide Oxygen All of them ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used as filler in tyre of rubber ? Carbon black Graphite Coal Coke Carbon black Graphite Coal Coke ANSWER DOWNLOAD EXAMIANS APP
Chemistry The open "Sigrees" or coal stoves often require fanning to sustain burning because of Lack of oxygen in the surroundings of sigrees Tendency of carbon dioxide to form a layer along with dust smoke Accumulation of smoke and dust over the sigrees Interrupted release of moisture from the material Lack of oxygen in the surroundings of sigrees Tendency of carbon dioxide to form a layer along with dust smoke Accumulation of smoke and dust over the sigrees Interrupted release of moisture from the material ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS