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 ? Napthalene Teflon Graphite Diamond Napthalene Teflon Graphite Diamond ANSWER DOWNLOAD EXAMIANS APP
Chemistry When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is Hydrogen Oxygen Carbon dioxide All of them Hydrogen Oxygen Carbon dioxide All of them ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used as filler in tyre of rubber ? Coal Graphite Coke Carbon black Coal Graphite 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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