Chemistry Which one of the following is used to restore the colour of old oilpaintings ? Ozone Hydrogen peroxide Sodium peroxide Barium peroxide Ozone Hydrogen peroxide Sodium peroxide Barium peroxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is a greenhouse gas ? Sulphur dioxide Helium Nitrogen Carbon dioxide Sulphur dioxide Helium Nitrogen Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The presence of Cobalt in Vitamin B12 was established for the first time by Hydrolysis test Borax-Bead test Sodium Nitroprusside test Spectroscopy Hydrolysis test Borax-Bead test Sodium Nitroprusside test Spectroscopy ANSWER DOWNLOAD EXAMIANS APP
Chemistry The open "Sigrees" or coal stoves often require fanning to sustain burning because of Lack of oxygen in the surroundings of sigrees Tendency of carbon dioxide to form a layer along with dust smoke Interrupted release of moisture from the material Accumulation of smoke and dust over the sigrees Lack of oxygen in the surroundings of sigrees Tendency of carbon dioxide to form a layer along with dust smoke Interrupted release of moisture from the material Accumulation of smoke and dust over the sigrees ANSWER DOWNLOAD EXAMIANS APP
Chemistry The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind? 1/6 1/4 1/3 1/8 1/6 1/4 1/3 1/8 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the inert gases can form compounds? Xenon Helium Krypton Argon Xenon Helium Krypton Argon ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS