Chemistry Which among the following is pure matter ? Brass Carbon–dioxide Iron Air Brass Carbon–dioxide Iron Air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Helium is added to the oxygen supply of deep sea divers because it is Readily miscible with oxygen Lighter than nitrogen Less soluble in blood than nitrogen at high pressure Less poisonous than nitrogen Readily miscible with oxygen Lighter than nitrogen Less soluble in blood than nitrogen at high pressure Less poisonous than nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The first metal used by a man was Brass Copper Silver Bronze Brass Copper Silver Bronze ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which type of radiations are absorbed by the upper layer of the atmosphere? Infrared Visible Ultraviolet Radio-waves Infrared Visible Ultraviolet Radio-waves ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following elements is obtained from sea weeds ? Argon Vanadium Sulphur Iodine Argon Vanadium Sulphur Iodine ANSWER DOWNLOAD EXAMIANS APP
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