Chemistry Number of neutrons in an atom of hydrogen is Three One Two Zero Three One Two Zero ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of neutrons present in an element having mass number 226 and atomic number 88 is : 314 50 88 138 314 50 88 138 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone depletion in the stratosphere is mainly caused by NO2 NO Chlorogluorocarbons SO2 NO2 NO Chlorogluorocarbons SO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals has least melting point ? Silver Gold Mercury Copper Silver Gold Mercury Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry Periodic table contains how many groups 18 19 16 17 18 19 16 17 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a commercial source of energy? Natural Gas Coal Firewood Petroleum Natural Gas Coal Firewood Petroleum ANSWER DOWNLOAD EXAMIANS APP
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