Chemistry A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? From brown to orange-red From pink to blue-green From blue to pink From brown to blue-black From brown to orange-red From pink to blue-green From blue to pink From brown to blue-black ANSWER DOWNLOAD EXAMIANS APP
Chemistry The water pollution in river is measured by the dissolved amount of Ozone Oxygen Chlorine Nitrogen Ozone Oxygen Chlorine Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is usually not an air-pollutant? Sulphur dioxide Hydrocarbons Nitrous oxide Carbon dioxide Sulphur dioxide Hydrocarbons Nitrous oxide Carbon dioxide 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 Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful Solar ultraviolet radiation Solar infrared radiation CO2 in the air SO2 in the air Solar ultraviolet radiation Solar infrared radiation CO2 in the air SO2 in the air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Concentration of a material which is lethal to 50% animal is called NOAEL LD50 LC50 ADI NOAEL LD50 LC50 ADI ANSWER DOWNLOAD EXAMIANS APP
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