Chemistry When formaldehyde and potassium hydroxide are heated, we get Methyl alcohol Acetylene Ethyl formate Methane Methyl alcohol Acetylene Ethyl formate Methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ? Sulphur dioxide Nitrous oxide Carbon dioxide Chlorofluorocarbon Sulphur dioxide Nitrous oxide Carbon dioxide Chlorofluorocarbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is secondary air pollutant ? Photochemical smog Dust particles SO2 NO2 Photochemical smog Dust particles SO2 NO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atoms of different elements have Different atomic number and different number of valence electrons Same atomic number and same electronic configuration Different atomic number and same eletronic configu-ration Same number of electrons and neutrons Different atomic number and different number of valence electrons Same atomic number and same electronic configuration Different atomic number and same eletronic configu-ration Same number of electrons and neutrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry The hardest form of carbon is graphite diamond charcoal coke graphite diamond charcoal coke ANSWER DOWNLOAD EXAMIANS APP
Chemistry The pollutant responsible for ozone holes is ________ CO2 SO2 CO CFC CO2 SO2 CO CFC ANSWER DOWNLOAD EXAMIANS APP
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