Chemistry Which one of the following is used to restore the colour of old oilpaintings ? Ozone Barium peroxide Hydrogen peroxide Sodium peroxide Ozone Barium peroxide Hydrogen peroxide Sodium peroxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one element has the lowest electronegativity value Radium Francium Chlorine Fluorine Radium Francium Chlorine Fluorine ANSWER DOWNLOAD EXAMIANS APP
Chemistry The presence of ozone in the stratosphere is responsible for Higher rate of photosynthesis Checking the penetration of ultra-violet rays to the earth Supplying oxygen for people travelling in jets Increasing the average global temperature in recent years Higher rate of photosynthesis Checking the penetration of ultra-violet rays to the earth Supplying oxygen for people travelling in jets Increasing the average global temperature in recent years ANSWER DOWNLOAD EXAMIANS APP
Chemistry Hard water and soft water can be distinguished by using Detergent Ordinary soap Dilute acid Liquid soap Detergent Ordinary soap Dilute acid Liquid soap ANSWER DOWNLOAD EXAMIANS APP
Chemistry Alcoholic (– OH) group can be identified by : FeCl3Test Ozonolysis Reaction Esterification Test Tollen's Reagent Test FeCl3Test Ozonolysis Reaction Esterification Test Tollen's Reagent Test 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
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