Chemistry Which type of radiations are absorbed by the upper layer of the atmosphere? Ultraviolet Visible Infrared Radio-waves Ultraviolet Visible Infrared Radio-waves ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used to remove rust stains on cloth? Lime Kerosene Petrol Oxalic acid solution Lime Kerosene Petrol Oxalic acid solution ANSWER DOWNLOAD EXAMIANS APP
Chemistry The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is 5x 5x/36 x/6 7.2 x 5x 5x/36 x/6 7.2 x ANSWER DOWNLOAD EXAMIANS APP
Chemistry The smog is essentially caused by the presence of O3 and N2 O2 and N2 O2 and O3 Oxides of N and S O3 and N2 O2 and N2 O2 and O3 Oxides of N and S ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of quartz is Calcium phosphate Sodium phosphate Calcium oxide Sodium silicate Calcium phosphate Sodium phosphate Calcium oxide Sodium silicate ANSWER DOWNLOAD EXAMIANS APP
Chemistry If water smells bad, then that odour can be removed by adding Activated carbon Alum Bleach Deactivated nitrogen Activated carbon Alum Bleach Deactivated nitrogen ANSWER DOWNLOAD EXAMIANS APP