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 blue to pink From brown to orange-red From brown to blue-black From pink to blue-green From blue to pink From brown to orange-red From brown to blue-black From pink to blue-green 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 dioxide and Methane Carbon monoxide and Sulphur dioxide Ammonia and Ozone Carbon tetraflouride and Nitrous oxide Carbon dioxide and Methane Carbon monoxide and Sulphur dioxide Ammonia and Ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is used in storage batteries? Lead Copper Tin Zinc Lead Copper Tin Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry PVC is obtained by the polymerisation of Propane Vinyl chloride Styrene Acetylene Propane Vinyl chloride Styrene Acetylene ANSWER DOWNLOAD EXAMIANS APP
Chemistry The depletion of Ozone layer is mainly due to Aviation fuels Volcanic eruptions Radioactive rays Chlorofluorocarbons Aviation fuels Volcanic eruptions Radioactive rays Chlorofluorocarbons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a secondary pollutant ? PAN SO2 NO CO PAN SO2 NO CO ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS