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