Chemistry Which one of the following contributes largely to the ‘green house effect’ ? Carbon monoxide Carbon dioxide Water vapour Ozone Carbon monoxide Carbon dioxide Water vapour Ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry Aqua regia is a 1 : 3 mixture, by volume, of Conc. hydrochloric acid and conc. nitric acid Conc. sulphuric acid and conc. nitric acid Conc. nitric acid and conc. hydrochloric acid Conc. nitric acid and conc. sulphuric acid Conc. hydrochloric acid and conc. nitric acid Conc. sulphuric acid and conc. nitric acid Conc. nitric acid and conc. hydrochloric acid Conc. nitric acid and conc. sulphuric acid 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 1/4 1/3 1/6 1/8 1/4 1/3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Diamond is lustrous because It is pure Its refractive index is high It is hard It is colourless It is pure Its refractive index is high It is hard It is colourless ANSWER DOWNLOAD EXAMIANS APP
Chemistry Exposure to mixtures of chemicals are greater than expected on the basis of effects of exposure to each chemical individually. This is known as Antagonism Synergism Additives Independent Antagonism Synergism Additives Independent ANSWER DOWNLOAD EXAMIANS APP
Chemistry Cyanide poisoning causes death in seconds because It causes Lysis of red blood cells It denatures enzymes of the heart/muscle It causes cardiac arrest It breaks the electron transport chain It causes Lysis of red blood cells It denatures enzymes of the heart/muscle It causes cardiac arrest It breaks the electron transport chain ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS