Chemistry Sodium vapour lamps glow with yellow colour. This is due to Its ability to absorb all other colours except yellow The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum sublimation of sodium to emit yellow colour The low ionisation energy of sodium Its ability to absorb all other colours except yellow The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum sublimation of sodium to emit yellow colour The low ionisation energy of sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most important ore of lead is Galena Pyrolusite Magnetite Siderite Galena Pyrolusite Magnetite Siderite ANSWER DOWNLOAD EXAMIANS APP
Chemistry The weight of 6.023 × 1022 atoms of carbon is 12 gms 120 gms 1.2 gms 0.12 gms 12 gms 120 gms 1.2 gms 0.12 gms ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is the main nitrogenous waste in humans ? Urea Ammonia Uric Acid Ammonium Nitrate Urea Ammonia Uric Acid Ammonium Nitrate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The antiparticle of an electron is Proton Alpha particles Positron Beta particles Proton Alpha particles Positron Beta particles ANSWER DOWNLOAD EXAMIANS APP
Chemistry Green house effect is accelerated by Deforestation All of these Rapid industrialization Increased transportation activity Deforestation All of these Rapid industrialization Increased transportation activity ANSWER DOWNLOAD EXAMIANS APP
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