Chemistry The gas used for filling weather balloons is Air Hydrogen Helium Nitrogen Air Hydrogen Helium Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Zone refining is used for the purification of Cu Ag Ge Au Cu Ag Ge Au ANSWER DOWNLOAD EXAMIANS APP
Chemistry When a lead storage battery is discharged, SO2 is evolved Lead is formed Sulphuric acid is consumed Lead sulphate is consumed SO2 is evolved Lead is formed Sulphuric acid is consumed Lead sulphate is consumed ANSWER DOWNLOAD EXAMIANS APP
Chemistry The purest form of water in nature is Lake water Sea water Rain water River water Lake water Sea water Rain water River water ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of d-electrons in Fe2+ (Z = 26) is not equal to that of p-electrons in CI(Z = 17) p-electrons in Ne(Z = 10) d-electrons in Fe(Z = 26) s-electrons in Mg(Z = 12) p-electrons in CI(Z = 17) p-electrons in Ne(Z = 10) d-electrons in Fe(Z = 26) s-electrons in Mg(Z = 12) ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone depletion in the stratosphere is mainly caused by SO2 NO2 NO Chlorogluorocarbons SO2 NO2 NO Chlorogluorocarbons ANSWER DOWNLOAD EXAMIANS APP
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