Chemistry Which one of the following is used for dating very old objects of archaeological importance? Radium Phosphorus-31 Carbon-14 Tritium Radium Phosphorus-31 Carbon-14 Tritium ANSWER DOWNLOAD EXAMIANS APP
Chemistry In which of the following substances all carbon atoms are quaternary in nature ? Diamond Graphite Teflon Napthalene Diamond Graphite Teflon Napthalene ANSWER DOWNLOAD EXAMIANS APP
Chemistry When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is Hydrogen All of them Carbon dioxide Oxygen Hydrogen All of them Carbon dioxide Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used as filler in tyre of rubber ? Coke Carbon black Graphite Coal Coke Carbon black Graphite Coal 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 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 ANSWER DOWNLOAD EXAMIANS APP
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