Chemistry Which one of the following metals pollutes the air of a city having large number of automobiles? Cadmium Lead Chromium Copper Cadmium Lead Chromium Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is 53 19 36 17 53 19 36 17 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas which emits from rice field is Nitrogen Methane All of these Ethane Nitrogen Methane All of these Ethane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used to make light weight, but strong plastic ? Methyl Methacrylate Polyvinyl Chloride Polythene Nylon Methyl Methacrylate Polyvinyl Chloride Polythene Nylon 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 A B C D A B C D ANSWER DOWNLOAD EXAMIANS APP
Chemistry Maximum permissible concentration of copper in drinking water in mg/L is 0.05 1 0.01 2 0.05 1 0.01 2 ANSWER DOWNLOAD EXAMIANS APP
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