Chemistry Which of the following is secondary air pollutant ? SO2 Dust particles NO2 Photochemical smog SO2 Dust particles NO2 Photochemical smog ANSWER DOWNLOAD EXAMIANS APP
Chemistry Maximum permissible concentration of total hardness in drinking water is 100 50 500 200 100 50 500 200 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Number of6.023 × 1020 atoms present in one mole of a gas at STP is '6.023 × 10–20 6.023 × 1023 '6.023 × 10–23 6.023 × 1020 '6.023 × 10–20 6.023 × 1023 '6.023 × 10–23 6.023 × 1020 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following has no unit Excitation potential Ionization energy Electron affinity Electronegativity Excitation potential Ionization energy Electron affinity Electronegativity ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals pollutes the air of a city having large number of automobiles? Chromium Lead Copper Cadmium Chromium Lead Copper Cadmium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The nucleus of an atom consists of protons and neutrons electrons and neutrons All of these electrons and protons protons and neutrons electrons and neutrons All of these electrons and protons ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS