Chemistry The most abundant element in the earth’s atmosphere is Argon Krypton Oxygen Nitrogen Argon Krypton Oxygen Nitrogen 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 C D B A C D B A ANSWER DOWNLOAD EXAMIANS APP
Chemistry When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to SO2 NO2 N2O SO3 SO2 NO2 N2O SO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The greenhouse effect is caused by the higher level of which gas in the atmosphere ? Carbon monoxide Sulphur dioxide Nitrous oxide Carbon dioxide Carbon monoxide Sulphur dioxide Nitrous oxide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper substances when exposed to air gains a green coating due to the formation of: Cu(NO3)2 CuO CuCO3 Cu(OH)2 CuSO4 Cu(NO3)2 CuO CuCO3 Cu(OH)2 CuSO4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals does not react with water to produce Hydrogen ? Lithium Cadmium Sodium Potassium Lithium Cadmium Sodium Potassium ANSWER DOWNLOAD EXAMIANS APP
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