Chemistry What material is used to make electric heater coil ? Iron Copper Silver Nichrome Iron Copper Silver Nichrome ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following causes the rusting of iron? a. Oxidation b. Reduction c. Chemical reaction with oxygend. Chemical reaction with CO2 C and d A and b A and c B and c C and d A and b A and c B and c ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stains of rust on clothes can be removed by : Alcohol Oxalic acid Petrol H2O2 Alcohol Oxalic acid Petrol H2O2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a man-made source of air pollution ? Forest fire All of these Automobile exhaust Bacterial action in soil and swamp areas Forest fire All of these Automobile exhaust Bacterial action in soil and swamp areas ANSWER DOWNLOAD EXAMIANS APP
Chemistry Who modified Bohr's theory by introducing elliptical orbits for electron path Thomson Sommerfeld Hund Rutherford Thomson Sommerfeld Hund Rutherford ANSWER DOWNLOAD EXAMIANS APP
Chemistry Iron is prevented from rusting by coating with zinc. This process is called as Corrosion Sublimation Reduction Galvanisation Corrosion Sublimation Reduction Galvanisation ANSWER DOWNLOAD EXAMIANS APP
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