Chemistry Oxygen has (+) oxidation number only in N2O H2O (2) OF2 C12O N2O H2O (2) OF2 C12O ANSWER DOWNLOAD EXAMIANS APP
Chemistry The acid which is secreted by the glands in the stomach wall is Sulphuric acid Phosphoric acid Nitric acid Hydrochloric acid Sulphuric acid Phosphoric acid Nitric acid Hydrochloric acid 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 Which one of the following is extensively used for sterilizing water ? Soda powder Alum Bleaching powder Borax powder Soda powder Alum Bleaching powder Borax powder ANSWER DOWNLOAD EXAMIANS APP
Chemistry The method of concentrating the ore which makes use of the difference in density between ore and impurities is called levigation leaching magnetic separation liquation levigation leaching magnetic separation liquation ANSWER DOWNLOAD EXAMIANS APP
Chemistry The iron ore which contains 72% of iron is : Siderite Magnetite Limonite Haematite Siderite Magnetite Limonite Haematite ANSWER DOWNLOAD EXAMIANS APP
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