Chemistry Ozone depletion in the atmosphere is mainly caused by Chlorofluorocarbon Hydrogen sulphide Nitrogen dioxide Sulphur dioxide Chlorofluorocarbon Hydrogen sulphide Nitrogen dioxide Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ammonial is a mixture of Aluminium powder and potassium nitrate Aluminium powder and ammonium nitrate Aluminium powder and ammonium sulphate Aluminium powder and ammonium chloride Aluminium powder and potassium nitrate Aluminium powder and ammonium nitrate Aluminium powder and ammonium sulphate Aluminium powder and ammonium chloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind? 1/6 1/8 1/3 1/4 1/6 1/8 1/3 1/4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry When iron rusts, its weight First increases and then decreases Remains the same Decreases Increases First increases and then decreases Remains the same Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Chemistry In the periodic table of elements, on moving from left to right across a period, the atomic radius Remains unchanged Increases Does not follow a definite pattern Decreases Remains unchanged Increases Does not follow a definite pattern Decreases ANSWER DOWNLOAD EXAMIANS APP
Chemistry The nucleus of a hydrogen atom consists of 1 proton only 1 proton + 2 neutron 1 neutron only 1 electron only 1 proton only 1 proton + 2 neutron 1 neutron only 1 electron only ANSWER DOWNLOAD EXAMIANS APP
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