Chemistry How many electrons in a Hydrogen atom Two One Three Four Two One Three Four ANSWER DOWNLOAD EXAMIANS APP
Chemistry Conversion of chemical energy into electrical energy occurs in A battery Dynamo Atomic bombs Electric heaters A battery Dynamo Atomic bombs Electric heaters ANSWER DOWNLOAD EXAMIANS APP
Chemistry In addition to hydrogen, the other abundant element present on Sun’s surface is Neon Argon Oxygen Helium Neon Argon Oxygen Helium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The lustre of the metals is because of Absorption of light due to the presence of cavities High density, due to closed packing of atoms High polish Reflection of light due to the presence of free electrons Absorption of light due to the presence of cavities High density, due to closed packing of atoms High polish Reflection of light due to the presence of free electrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Permanent – hardness of water may be removed by addition of Lime Sodium carbonate Potassium Permangante Alum Lime Sodium carbonate Potassium Permangante Alum ANSWER DOWNLOAD EXAMIANS APP
Chemistry Adding Cl2 to benzene in the presence of AlCl3 is an example of : Elimination reaction Substitution reaction Addition reaction None of the options Elimination reaction Substitution reaction Addition reaction None of the options ANSWER DOWNLOAD EXAMIANS APP
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