Chemistry When iron rusts, its weight Remains the same First increases and then decreases Increases Decreases Remains the same First increases and then decreases Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Chemistry Aqua regia is a 1 : 3 mixture, by volume, of 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 Conc. hydrochloric acid and conc. nitric acid 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 7.2 x 5x/36 5x x/6 7.2 x 5x/36 5x x/6 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Select the one which is not a mixture : LPG Gasoline Distilled water Air LPG Gasoline Distilled water Air ANSWER DOWNLOAD EXAMIANS APP
Chemistry The charcoal used to decolourise brown sugar solution is Animal charcoal Wood charcoal Coconut charcoal Sugar charcoal Animal charcoal Wood charcoal Coconut charcoal Sugar charcoal ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ? Alkalinity Hardness Eutrophication Acidity Alkalinity Hardness Eutrophication Acidity ANSWER DOWNLOAD EXAMIANS APP
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