Chemistry The gas that usually causes explosions in coal mines is Carbon monoxide Hydrogen Air Methane Carbon monoxide Hydrogen Air Methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry The “King of Metals” is : Gold Aluminium Silver Iron Gold Aluminium Silver Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry The inexpensive and commonly used variety of glass is called soda glass. was used initially for making bottles of soda(carbonated drink) was initially used for storing sodium carbonate is made using soda(sodium carbonate) is made using soda lime was used initially for making bottles of soda(carbonated drink) was initially used for storing sodium carbonate is made using soda(sodium carbonate) is made using soda lime ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the element that is in the highest percentage in the composition of the earth ? Iron Oxygen Silicon Magnesium Iron Oxygen Silicon Magnesium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Natural rubber is the polymer of : Styrene Butadiene Isoprene Ethylene Styrene Butadiene Isoprene Ethylene ANSWER DOWNLOAD EXAMIANS APP
Chemistry Browning of paper in old books is caused by Collection of dust Lack of aeration Frequent use Oxidation of cellulose Collection of dust Lack of aeration Frequent use Oxidation of cellulose ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS