Chemistry What is the most commonly used substance in fluorescent tubes? Sodium oxide and argon Mercury oxide and neon Mercury vapour and argon Sodium vapour and neon Sodium oxide and argon Mercury oxide and neon Mercury vapour and argon Sodium vapour and neon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Adding Cl2 to benzene in the presence of AlCl3 is an example of : Addition reaction Elimination reaction None of the options Substitution reaction Addition reaction Elimination reaction None of the options Substitution reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following laser types is used in a laser printer? Excimer laser Gas laser Dye laser Semiconductor laser Excimer laser Gas laser Dye laser Semiconductor laser ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemicals is used in photography ? Sodium chloride Aluminium hydroxide Silver bromide Potassium nitrate Sodium chloride Aluminium hydroxide Silver bromide Potassium nitrate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The hardest form of carbon is graphite coke charcoal diamond graphite coke charcoal diamond ANSWER DOWNLOAD EXAMIANS APP
Chemistry Where does the oxygen that keeps us alive come from? Water Carbonates absorbed from soil Oxides of minerals Carbon dioxide Water Carbonates absorbed from soil Oxides of minerals Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
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