Chemistry The main constituent of biogas is Acetic acid Methyl alcohol Methane Oxygen Acetic acid Methyl alcohol Methane Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The presence of Cobalt in Vitamin B12 was established for the first time by Hydrolysis test Spectroscopy Borax-Bead test Sodium Nitroprusside test Hydrolysis test Spectroscopy Borax-Bead test Sodium Nitroprusside test ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is helium methane ozone oxygen helium methane ozone oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a commercial source of energy? Dried dung Natural gas Sun Agricultural waste Dried dung Natural gas Sun Agricultural waste ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium vapour lamps glow with yellow colour. This is due to 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 Its ability to absorb all other colours except yellow ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ? Eutrophication Acidity Alkalinity Hardness Eutrophication Acidity Alkalinity Hardness ANSWER DOWNLOAD EXAMIANS APP
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