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 pink to blue-green 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 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used to restore the colour of old oilpaintings ? Sodium peroxide Ozone Hydrogen peroxide Barium peroxide Sodium peroxide Ozone Hydrogen peroxide Barium peroxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is also known as solution ? A compound A heterogeneous mixture A homogeneous mixture A suspension A compound A heterogeneous mixture A homogeneous mixture A suspension ANSWER DOWNLOAD EXAMIANS APP
Chemistry Black lung disease occurs in people working in Coal mines Paint manufacturing industry Electroplating industry Organic solvents industry Coal mines Paint manufacturing industry Electroplating industry Organic solvents industry ANSWER DOWNLOAD EXAMIANS APP
Chemistry The coloured discharge tubes for advertisement mainly contain Helium Xenon Neon Argon Helium Xenon Neon Argon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Major gaseous pollutant of the thermal power station is NO2 NH3 H2 S SO2 NO2 NH3 H2 S SO2 ANSWER DOWNLOAD EXAMIANS APP
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