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