Chemistry The lightest gas which is non-inflammable is Oxygen Nitrogen Helium Hydrogen Oxygen Nitrogen Helium Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Cement is made hard with Polymerisation Dissociation of water Dehydration Hydration and dissociation of water Polymerisation Dissociation of water Dehydration Hydration and dissociation of water ANSWER DOWNLOAD EXAMIANS APP
Chemistry Match the List-I with List-II and select the correct answer using the codes given below the listsList-I (Green house gas)List-II(Major source)F.Carbondioxide1.Enteric fermentation in cattleG.Methane2.Burning of fossilH.Chloroflro carbons3.Mercury compounds in waste waterJ.Nitrous oxide4.Nylon production 5.Air conditioner and refrigeration unitsCodes :FGHJA.2154B.3421C.3241D.1234 D A C B D A C B ANSWER DOWNLOAD EXAMIANS APP
Chemistry When a nutrient like fertilizer is present in large quantities in a water bodies, plants grow and decay in large numbers because of suffocating of pond that does not leave enough oxygen needed to support life. This type of pollution is called Green house effect None of these Eutrophication Smog Green house effect None of these Eutrophication Smog ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical formula of the laughing gas is N2O3 NO2 N2O NO N2O3 NO2 N2O NO ANSWER DOWNLOAD EXAMIANS APP
Chemistry The three elements most needed in common fertilisers are : Nitrogen, Potassium and Phosphorous Phosphorous, Sodium and Nitrogen Calcium, Phosphorous and Potassium Sulphur, Phosphorous and Sodium Nitrogen, Potassium and Phosphorous Phosphorous, Sodium and Nitrogen Calcium, Phosphorous and Potassium Sulphur, Phosphorous and Sodium ANSWER DOWNLOAD EXAMIANS APP
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