Chemistry The depletion of Ozone layer is mainly due to Radioactive rays Aviation fuels Chlorofluorocarbons Volcanic eruptions Radioactive rays Aviation fuels Chlorofluorocarbons Volcanic eruptions ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is extensively used for sterilizing water ? Bleaching powder Alum Soda powder Borax powder Bleaching powder Alum Soda powder Borax powder ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used as non-stick coating for cooking utensils? Styrofoam Teflon Polystyrene Perspex Styrofoam Teflon Polystyrene Perspex ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which gas is used for converting vegetable oils into saturated fats ? H2 SO2 O2 Cl2 H2 SO2 O2 Cl2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the toxic heavy metals is found in modern tannery industries ? Nickel Lead Chromium Zinc Nickel Lead Chromium Zinc ANSWER DOWNLOAD EXAMIANS APP
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 emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum The low ionisation energy of sodium Its ability to absorb all other colours except yellow sublimation of sodium to emit yellow colour The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum The low ionisation energy of sodium ANSWER DOWNLOAD EXAMIANS APP
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