Chemistry The electronic configuration of an atom having atomic number ‘20’ is 2, 8, 8, 2 2, 6, 8, 4 2, 8, 10 2, 10, 8 2, 8, 8, 2 2, 6, 8, 4 2, 8, 10 2, 10, 8 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Petroleum consists of a mixture of Hydrocarbons Carbonates Carbohydrates Carbides Hydrocarbons Carbonates Carbohydrates Carbides ANSWER DOWNLOAD EXAMIANS APP
Chemistry Particulates (< 1 µm size) remaining suspended in air indefinitely and transported by wind currents are called Aerosols Fumes Smoke Mists Aerosols Fumes Smoke Mists ANSWER DOWNLOAD EXAMIANS APP
Chemistry Who is known as the 'father of modern chemistry' Democritus John Dalton Antoine Lavoisier Robert Boyle Democritus John Dalton Antoine Lavoisier Robert Boyle ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is the heaviest metal among the following? Copper Silver Iron Gold Copper Silver Iron Gold ANSWER DOWNLOAD EXAMIANS APP
Chemistry Helium gas is used in gas balloons instead of hydrogen gas because it is More abundant than hydrogen Non-combustible More stable Lighter than hydrogen More abundant than hydrogen Non-combustible More stable Lighter than hydrogen ANSWER DOWNLOAD EXAMIANS APP