Chemistry Ozone depletion in the atmosphere is mainly caused by Hydrogen sulphide Nitrogen dioxide Chlorofluorocarbon Sulphur dioxide Hydrogen sulphide Nitrogen dioxide Chlorofluorocarbon Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemically ‘Quick Silver is known as Copper Aluminium Mercury Silver Copper Aluminium Mercury Silver ANSWER DOWNLOAD EXAMIANS APP
Chemistry A balloon filled with helium rises in air because Helium pushes down on the air below the balloon Helium is less dense than air Air exerts an upward force on the balloon The balloon is weightless Helium pushes down on the air below the balloon Helium is less dense than air Air exerts an upward force on the balloon The balloon is weightless ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one element has the lowest electronegativity value Fluorine Francium Radium Chlorine Fluorine Francium Radium Chlorine ANSWER DOWNLOAD EXAMIANS APP
Chemistry The important ore of aluminium is Fluorspar Haematite Cryolite Bauxite Fluorspar Haematite Cryolite Bauxite 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
EXAMIANS