Chemistry Type metal used in printing press is an alloy of Lead and copper Lead and bismuth Lead and zinc Lead and antimony Lead and copper Lead and bismuth Lead and zinc Lead and antimony ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is secondary air pollutant ? SO2 Photochemical smog Dust particles NO2 SO2 Photochemical smog Dust particles NO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass gets discoloured in air due to constant exposure in presence of: Aluminium sulphide Hydrogen sulphide Aluminium phosphide Hydrogenated wafers Aluminium sulphide Hydrogen sulphide Aluminium phosphide Hydrogenated wafers ANSWER DOWNLOAD EXAMIANS APP
Chemistry Supersonic jet causes pollution by thinning of O3 layer O 2 layer CO2 layer SO2 layer O3 layer O 2 layer CO2 layer SO2 layer ANSWER DOWNLOAD EXAMIANS APP
Chemistry An electric iron has a heating element made of : Nichrome Copper Tungsten Zinc Nichrome Copper Tungsten Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry The polymer used in making plastic crockery is Bakelite Melamine Nylon Decron Bakelite Melamine Nylon Decron ANSWER DOWNLOAD EXAMIANS APP
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