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