Chemistry Which of the toxic heavy metals is found in modern tannery industries ? Zinc Lead Chromium Nickel Zinc Lead Chromium Nickel ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a secondary pollutant ? NO SO2 CO PAN NO SO2 CO PAN ANSWER DOWNLOAD EXAMIANS APP
Chemistry Bakelite is a co-polymer of Phenol and Benzaldehyde Acetaldehyde Formaldehyde Cinnaldehyde Benzaldehyde Acetaldehyde Formaldehyde Cinnaldehyde ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of d-electrons in Fe2+ (Z = 26) is not equal to that of p-electrons in CI(Z = 17) d-electrons in Fe(Z = 26) p-electrons in Ne(Z = 10) s-electrons in Mg(Z = 12) p-electrons in CI(Z = 17) d-electrons in Fe(Z = 26) p-electrons in Ne(Z = 10) s-electrons in Mg(Z = 12) ANSWER DOWNLOAD EXAMIANS APP
Chemistry The smog is essentially caused by the presence of O2 and N2 O3 and N2 Oxides of N and S O2 and O3 O2 and N2 O3 and N2 Oxides of N and S O2 and O3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercial nitric acid is coloured because it contains dissolved : Oxygen Coloured impurities Nitrogen dioxide Nitrous oxide Oxygen Coloured impurities Nitrogen dioxide Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
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