Chemistry The most abundant element by number in the living system is : Hydrogen Nitrogen Carbon Oxygen Hydrogen Nitrogen Carbon Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The material used in the manufacture of lead pencil is Lead Graphite Mica Carbon Lead Graphite Mica Carbon 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 B D C A B D C A ANSWER DOWNLOAD EXAMIANS APP
Chemistry Maximum permissible concentration of total hardness in drinking water is 200 100 500 50 200 100 500 50 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Aquaregia is a mixture of the following in the ratio 1 : 3 by volume Conc. HCl and conc. HNO3 Conc. HNO3 and conc. H2SO4 Conc. HNO3 and conc. HCl Dil. HCl and dil. HNO3 Conc. HCl and conc. HNO3 Conc. HNO3 and conc. H2SO4 Conc. HNO3 and conc. HCl Dil. HCl and dil. HNO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The total energy of revolving electron in an atom Will always be positive Can have any value above zero Cannot be negative Can never be positive Will always be positive Can have any value above zero Cannot be negative Can never be positive ANSWER DOWNLOAD EXAMIANS APP
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