Chemistry The electronic configuration of an atom having atomic number ‘20’ is 2, 8, 8, 2 2, 10, 8 2, 6, 8, 4 2, 8, 10 2, 8, 8, 2 2, 10, 8 2, 6, 8, 4 2, 8, 10 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mass of one Avogadro number of helium atom is 1.00 gram 4 x 6.02 x 1023 gram 8.00 gram 4.00 gram 1.00 gram 4 x 6.02 x 1023 gram 8.00 gram 4.00 gram ANSWER DOWNLOAD EXAMIANS APP
Chemistry The process of removing calcium and magnesium from hard water is known as Water softening Filtration Sedimentation Flocculation Water softening Filtration Sedimentation Flocculation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a secondary pollutant ? SO2 PAN CO NO SO2 PAN CO NO ANSWER DOWNLOAD EXAMIANS APP
Chemistry Cooking gas is a mixture of Methane and ethylene Carbon dioxide and oxygen Carbon monoxide and carbon dioxide Butane and propane Methane and ethylene Carbon dioxide and oxygen Carbon monoxide and carbon dioxide Butane and propane ANSWER DOWNLOAD EXAMIANS APP
Chemistry The elements with atomic numbers 9, 17, 35, 53, 85 are all Heavy metals Halogens Light metals Noble gases Heavy metals Halogens Light metals Noble gases ANSWER DOWNLOAD EXAMIANS APP