Chemistry Ozone saves the biosphere by absorbing high energy radiations called ________ . Infra-red (IR) X–rays Gamma rays Ultraviolet rays (UV) Infra-red (IR) X–rays Gamma rays Ultraviolet rays (UV) ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stains of rust on clothes can be removed by : Oxalic acid H2O2 Alcohol Petrol Oxalic acid H2O2 Alcohol Petrol ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass gets discoloured in air due to constant exposure in presence of: Aluminium sulphide Hydrogen sulphide Hydrogenated wafers Aluminium phosphide Aluminium sulphide Hydrogen sulphide Hydrogenated wafers Aluminium phosphide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sour taste of ‘Coca Cola’ is due to the presence of Hydrochloric acid Phosphoric acid Acetic acid Formic acid Hydrochloric acid Phosphoric acid Acetic acid Formic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is the correct sequence of countries in terms of maximum carbon dioxide emission? European Union, China, USA, India USA, India, China, European Union China, India, European Union, USA China, USA, European Union, India European Union, China, USA, India USA, India, China, European Union China, India, European Union, USA China, USA, European Union, India ANSWER DOWNLOAD EXAMIANS APP
Chemistry Carborundum is another name of Calcium oxide Calcium carbide Silicon oxide Silicon carbide Calcium oxide Calcium carbide Silicon oxide Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
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