Chemistry Hydrogen is not found in atmosphere because It immediately combines with oxygen to form water It is highly inflammable It is absorbed by plants It is the lightest gas It immediately combines with oxygen to form water It is highly inflammable It is absorbed by plants It is the lightest gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry The minimum energy required for an effective collision is Free energy Internal energy Threshold energy Activation energy Free energy Internal energy Threshold energy Activation energy ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element by number in the living system is : Hydrogen Nitrogen Oxygen Carbon Hydrogen Nitrogen Oxygen Carbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which gas is most stable at room temperature O2 F2 N2 H2 O2 F2 N2 H2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical formula of washing soda is Ca(OH)2 Na2SO4.10H2O Na2CO3.10H2O NaHCO3 Ca(OH)2 Na2SO4.10H2O Na2CO3.10H2O NaHCO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The name of plastic polymer from which combs, toys, bowls etc., can be made, is Polystyrene Polyurethane Metallic polysulphides Teflon Polystyrene Polyurethane Metallic polysulphides Teflon ANSWER DOWNLOAD EXAMIANS APP
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