Chemistry Which of the toxic heavy metals is found in modern tannery industries ? Nickel Lead Chromium Zinc Nickel Lead Chromium Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the mass percentage of oxygen in carbon dioxide (CO2) 0.509 0.305 0.727 0.658 0.509 0.305 0.727 0.658 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stains of rust on clothes can be removed by : H2O2 Alcohol Oxalic acid Petrol H2O2 Alcohol Oxalic acid Petrol ANSWER DOWNLOAD EXAMIANS APP
Chemistry The compounds formed when hydrogen combines with p-block elements are called Ionic hydrides Molecular hydrides Metallic hydrides Polynuclear hydrides Ionic hydrides Molecular hydrides Metallic hydrides Polynuclear hydrides ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the product formed when sodium bicarbonate is heated strongly? Sodium Hydroxide Sodium Monoxide Sodium Peroxide Sodium Carbonate Sodium Hydroxide Sodium Monoxide Sodium Peroxide Sodium Carbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Warming Ammonium chloride with sodium hydrochloride in a test tube is an example of Isothermal system Open system Isobaric system Closed system Isothermal system Open system Isobaric system Closed system ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS