Chemistry Ozone saves the biosphere by absorbing high energy radiations called ________ . Gamma rays Ultraviolet rays (UV) X–rays Infra-red (IR) Gamma rays Ultraviolet rays (UV) X–rays Infra-red (IR) ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is the best fuel in terms of energy released per gram of fuel? Ethanol Methane Hydrogen Butane Ethanol Methane Hydrogen Butane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical formula of washing soda is Na2CO3.10H2O Na2SO4.10H2O Ca(OH)2 NaHCO3 Na2CO3.10H2O Na2SO4.10H2O Ca(OH)2 NaHCO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silver nitrate solution is kept in brown bottles in laboratory because 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 It reacts with ordinary white bottles Brown bottles do not react with it ANSWER DOWNLOAD EXAMIANS APP
Chemistry The coordination number of body centered atom in cubic structure is 10 6 4 8 10 6 4 8 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Gypsum is used for improvement of: Podsols Acidic soils Alkaline soils Saline soils Podsols Acidic soils Alkaline soils Saline soils ANSWER DOWNLOAD EXAMIANS APP
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