Chemistry Now-a-days yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps ? Hydrogen Neon Sodium Nitrogen Hydrogen Neon Sodium Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main source of Naphthalene is Camphor Diesel Charcoal Coal-tar Camphor Diesel Charcoal Coal-tar ANSWER DOWNLOAD EXAMIANS APP
Chemistry Browning of paper in old books is caused by Frequent use Lack of aeration Collection of dust Oxidation of cellulose Frequent use Lack of aeration Collection of dust Oxidation of cellulose ANSWER DOWNLOAD EXAMIANS APP
Chemistry The third shell of an atom can have a maximum of ______ electrons 13 15 21 18 13 15 21 18 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following laser types is used in a laser printer? Gas laser Dye laser Semiconductor laser Excimer laser Gas laser Dye laser Semiconductor laser Excimer laser ANSWER DOWNLOAD EXAMIANS APP
Chemistry In chemical terms, what are alums used for purifying water for drinking purposes ? Double sulphates Double nitrate Nitrates of aluminium Hydrated chlorides Double sulphates Double nitrate Nitrates of aluminium Hydrated chlorides ANSWER DOWNLOAD EXAMIANS APP
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