Chemistry When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy siate, they emit light, which we can observe in Raman spectra Emission spectra Fluorescence Absorption spectra Raman spectra Emission spectra Fluorescence Absorption spectra ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium vapour lamps glow with yellow colour. This is due to 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 Its ability to absorb all other colours except yellow ANSWER DOWNLOAD EXAMIANS APP
Chemistry The term 'brown air' is used for Photochemical smog Acid fumes Sulphurous smog Industrial smog Photochemical smog Acid fumes Sulphurous smog Industrial smog ANSWER DOWNLOAD EXAMIANS APP
Chemistry The heat energy produced when the human body metabolises 1 gram of fat is 39 KJ 1 KJ 30 KJ 29 KJ 39 KJ 1 KJ 30 KJ 29 KJ ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas produced in marshy places due to decomposition of vegetation is Methane Sulphur dioxide Carbon monoxide Carbon dioxide Methane Sulphur dioxide Carbon monoxide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is an iron ore ? Bauxite Nitrite Magnetite Lignite Bauxite Nitrite Magnetite Lignite ANSWER DOWNLOAD EXAMIANS APP
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