Chemistry When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to SO3 NO2 N2O SO2 SO3 NO2 N2O SO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The first metal used by man was gold copper iron bronze gold copper iron bronze ANSWER DOWNLOAD EXAMIANS APP
Chemistry A polymeric substance used to make parachute is Rayon Cotton Viscose Terylene Rayon Cotton Viscose Terylene ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used to restore the colour of old oilpaintings ? Ozone Hydrogen peroxide Barium peroxide Sodium peroxide Ozone Hydrogen peroxide Barium peroxide Sodium peroxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mass number of an atom is equal to the number of protons the number of nucleons the number of neutrons the number of protons and electrons the number of protons the number of nucleons the number of neutrons the number of protons and electrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used in the manufacture of vanaspati from vegetable oil is oxygen carbon dioxide nitrogen hydrogen oxygen carbon dioxide nitrogen hydrogen ANSWER DOWNLOAD EXAMIANS APP
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