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