Chemistry Which one of the following forms of phosphorus is most reactive? Violet phosphorus White phosphorus Red phosphorus Black phosphorus Violet phosphorus White phosphorus Red phosphorus Black phosphorus ANSWER DOWNLOAD EXAMIANS APP
Chemistry Who developed the model of atomic structure ? Volta Faraday Bohr and Rutherford Alfred Nobel Volta Faraday Bohr and Rutherford Alfred Nobel ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is secondary air pollutant ? Photochemical smog Dust particles NO2 SO2 Photochemical smog Dust particles NO2 SO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The purest form of water in nature is Rain water Lake water Sea water River water Rain water Lake water Sea water River water ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most common cause of pollution of air is Carbon monoxide Carbon dioxide Sulphur dioxide Smoke Carbon monoxide Carbon dioxide Sulphur dioxide Smoke ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal used to galvanise iron to protect it from rusting is Zinc Antimony Lead Chromium Zinc Antimony Lead Chromium ANSWER DOWNLOAD EXAMIANS APP
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