Chemistry Which of the toxic heavy metals is found in modern tannery industries ? Zinc Chromium Lead Nickel Zinc Chromium Lead Nickel ANSWER DOWNLOAD EXAMIANS APP
Chemistry Rusting of iron takes place due to Oxidation Corrosion Carbonation Exfoliation Oxidation Corrosion Carbonation Exfoliation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a noble gas ? Hydrogen Neon Argon Helium Hydrogen Neon Argon Helium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most common cause of pollution of air is Carbon monoxide Sulphur dioxide Smoke Carbon dioxide Carbon monoxide Sulphur dioxide Smoke Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to SO3 SO2 NO2 N2O SO3 SO2 NO2 N2O ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element absorbed both in cation and anion form is Calcium Sulphur Phosphorus Nitrogen Calcium Sulphur Phosphorus Nitrogen ANSWER DOWNLOAD EXAMIANS APP
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