Chemistry Sodium vapour lamps glow with yellow colour. This is due to Its ability to absorb all other colours except yellow The low ionisation energy of sodium The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum sublimation of sodium to emit yellow colour Its ability to absorb all other colours except yellow The low ionisation energy of sodium The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum sublimation of sodium to emit yellow colour ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is secondary air pollutant ? Dust particles SO2 NO2 Photochemical smog Dust particles SO2 NO2 Photochemical smog ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a commercial source of energy? Natural gas Agricultural waste Dried dung Sun Natural gas Agricultural waste Dried dung Sun ANSWER DOWNLOAD EXAMIANS APP
Chemistry Type metal used in printing press is an alloy of Lead and zinc Lead and bismuth Lead and copper Lead and antimony Lead and zinc Lead and bismuth Lead and copper Lead and antimony ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is not a characteristic feature of alloys? They are Homogeneous systems Mixtures Compounds Solutions Homogeneous systems Mixtures Compounds Solutions ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which gas is most stable at room temperature F2 O2 H2 N2 F2 O2 H2 N2 ANSWER DOWNLOAD EXAMIANS APP
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