Chemistry The lustre of the metals is because of High polish High density, due to closed packing of atoms Absorption of light due to the presence of cavities Reflection of light due to the presence of free electrons High polish High density, due to closed packing of atoms Absorption of light due to the presence of cavities Reflection of light due to the presence of free electrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Rusting of iron takes place due to Exfoliation Carbonation Corrosion Oxidation Exfoliation Carbonation Corrosion Oxidation ANSWER DOWNLOAD EXAMIANS APP
Chemistry The iron ore magnetite consists of FeCO3 Fe2O3 3Fe2O3 .. 3H2O Fe3OH4 FeCO3 Fe2O3 3Fe2O3 .. 3H2O Fe3OH4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The addition of gypsum to portland cement helps in : Preventing rapid setting of cement Increasing the strength of cement Reduction in the cost of cement Rapid setting of cement Preventing rapid setting of cement Increasing the strength of cement Reduction in the cost of cement Rapid setting of cement ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atomic number of an atom gives the number of which of the following ? Neutrons Electrons Protons Neutrons and protons Neutrons Electrons Protons Neutrons and protons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ? Hardness Eutrophication Alkalinity Acidity Hardness Eutrophication Alkalinity Acidity ANSWER DOWNLOAD EXAMIANS APP
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