Chemistry The percentage of oxygen in air is approximately 0.01 0.21 1 0.78 0.01 0.21 1 0.78 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used to extinguish fire is Carbon dioxide Nitrogen Carbon monoxide Neon Carbon dioxide Nitrogen Carbon monoxide Neon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Select the one which is not a mixture : Air Distilled water LPG Gasoline Air Distilled water LPG Gasoline ANSWER DOWNLOAD EXAMIANS APP
Chemistry The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle? 100 years 3 billion years 0.01 minute 13 days 100 years 3 billion years 0.01 minute 13 days ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas produced in marshy places due to decomposition of vegetation is Sulphur dioxide Carbon dioxide Methane Carbon monoxide Sulphur dioxide Carbon dioxide Methane Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used as a sowing agent in the preparation of soft drinks? Boric acid Phosphorus acid Salicylic acid Phosphoric acid Boric acid Phosphorus acid Salicylic acid Phosphoric acid ANSWER DOWNLOAD EXAMIANS APP
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