Chemistry The major constituent of air is oxygen carbon dioxide hydrogen nitrogen oxygen carbon dioxide hydrogen nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The buffer action of blood is due to the presence of [HCO3]– and H2CO3 HCI and NaCI CI– and [HCO3]– CI– and [CO3]2– [HCO3]– and H2CO3 HCI and NaCI CI– and [HCO3]– CI– and [CO3]2– ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used to denature ethanol ? Propyl alcohol Phenol Methane Methyl alcohol Propyl alcohol Phenol Methane Methyl alcohol ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used to restore the colour of old oilpaintings ? Sodium peroxide Barium peroxide Ozone Hydrogen peroxide Sodium peroxide Barium peroxide Ozone Hydrogen peroxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silver nitrate solution is kept in brown bottles in laboratory because It reacts with ordinary white bottles Brown bottles do not react with it Brown bottles react with it Brown bottles stops the passage of light through it It reacts with ordinary white bottles Brown bottles do not react with it Brown bottles react with it Brown bottles stops the passage of light through it ANSWER DOWNLOAD EXAMIANS APP
Chemistry The three elements most needed in common fertilisers are : Nitrogen, Potassium and Phosphorous Phosphorous, Sodium and Nitrogen Sulphur, Phosphorous and Sodium Calcium, Phosphorous and Potassium Nitrogen, Potassium and Phosphorous Phosphorous, Sodium and Nitrogen Sulphur, Phosphorous and Sodium Calcium, Phosphorous and Potassium ANSWER DOWNLOAD EXAMIANS APP
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