Chemistry The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind? 1/4 1/6 1/3 1/8 1/4 1/6 1/3 1/8 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Bleaching powder is used in drinking water as a/an Coagulant Antibiotic Disinfectant Antiseptic Coagulant Antibiotic Disinfectant Antiseptic ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following group of gases contributes to the 'Green House Effect'? Carbon tetraflouride and Nitrous oxide Carbon monoxide and Sulphur dioxide Carbon dioxide and Methane Ammonia and Ozone Carbon tetraflouride and Nitrous oxide Carbon monoxide and Sulphur dioxide Carbon dioxide and Methane Ammonia and Ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry Nitrogen is an essential constituent of all : Carbohydrates Proteins Fats Vitamins Carbohydrates Proteins Fats Vitamins ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the most common salt in sea water ? Potassium chloride Sodium chloride Magnesium sulphate Calcium carbonate Potassium chloride Sodium chloride Magnesium sulphate Calcium carbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry J.J. Thomson’s proposed model of atom is generally called ________ model. Plum and pudding Cream and pudding Plum and cake Cream and cake Plum and pudding Cream and pudding Plum and cake Cream and cake ANSWER DOWNLOAD EXAMIANS APP
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