Chemistry Which of the following is used as non-stick coating for cooking utensils? Perspex Styrofoam Teflon Polystyrene Perspex Styrofoam Teflon Polystyrene ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical formula of washing soda is NaHCO3 Ca(OH)2 Na2CO3.10H2O Na2SO4.10H2O NaHCO3 Ca(OH)2 Na2CO3.10H2O Na2SO4.10H2O ANSWER DOWNLOAD EXAMIANS APP
Chemistry Browning of paper in old books is caused by Oxidation of cellulose Lack of aeration Collection of dust Frequent use Oxidation of cellulose Lack of aeration Collection of dust Frequent use ANSWER DOWNLOAD EXAMIANS APP
Chemistry Spontaneous change is one in there is: Increase in free energy An increase in Internal energy A lowering of free energy A lowering of entropy Increase in free energy An increase in Internal energy A lowering of free energy A lowering of entropy ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass is a Compound Heterogeneous mixture Homogeneous mixture Element Compound Heterogeneous mixture Homogeneous mixture Element ANSWER DOWNLOAD EXAMIANS APP
Chemistry Mercury is emitted into air by Burning coal Coal fire Steam engine Burning garbage Burning coal Coal fire Steam engine Burning garbage ANSWER DOWNLOAD EXAMIANS APP
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