Chemistry Sodium vapour lamps glow with yellow colour. This is due to Its ability to absorb all other colours except yellow sublimation of sodium to emit yellow colour The low ionisation energy of sodium The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum Its ability to absorb all other colours except yellow sublimation of sodium to emit yellow colour The low ionisation energy of sodium The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum ANSWER DOWNLOAD EXAMIANS APP
Chemistry The components of water can be separated by They can not be separated Physical methods Both A and B Chemical methods They can not be separated Physical methods Both A and B Chemical methods ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sulphur dioxide level in the atmosphere can be reduced by using Low - sulphur fuels Static electricity to attract it in factory chimneys Catalytic converters in industry More efficient car engines Low - sulphur fuels Static electricity to attract it in factory chimneys Catalytic converters in industry More efficient car engines ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silver halides are used in photographic plates because they are Totally colourless Oxidised in air Reduced by light Soluble in hyposolution Totally colourless Oxidised in air Reduced by light Soluble in hyposolution ANSWER DOWNLOAD EXAMIANS APP
Chemistry The Refrigerant 'FREON' is Hydrofluosilicic Acid Calcium Tetra Fluoride Difluoro Dichloro Methane Fluorspar and Felspar Hydrofluosilicic Acid Calcium Tetra Fluoride Difluoro Dichloro Methane Fluorspar and Felspar ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which type of radiations are absorbed by the upper layer of the atmosphere? Radio-waves Infrared Visible Ultraviolet Radio-waves Infrared Visible Ultraviolet ANSWER DOWNLOAD EXAMIANS APP
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