Chemistry What is the most commonly used substance in fluorescent tubes? Sodium vapour and neon 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 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The manufacturing of iron from iron ore involves the process of Oxidation Electrolysis Fractional distillation Reduction Oxidation Electrolysis Fractional distillation Reduction ANSWER DOWNLOAD EXAMIANS APP
Chemistry The filter over which sewage is sprinkled is called as Trickling filter Intermittent sand filter Percolating filter Contact bed Trickling filter Intermittent sand filter Percolating filter Contact bed ANSWER DOWNLOAD EXAMIANS APP
Chemistry The green colour seen in firework displays is due to the chloride salt of : Barium Strontium Sodium Calcium Barium Strontium Sodium Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The purest form of water in nature is Sea water Rain water Lake water River water Sea water Rain water Lake water River water ANSWER DOWNLOAD EXAMIANS APP
Chemistry Rutherford’s scattering experiment proved the presence of Atoms in all matter Neutrons in atoms Electrons in atoms Nucleus in atoms Atoms in all matter Neutrons in atoms Electrons in atoms Nucleus in atoms ANSWER DOWNLOAD EXAMIANS APP
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