Chemistry Which one is a naturally occuring noble gas Sodium Potassium Boron Argon Sodium Potassium Boron Argon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Diamond is harder than graphite because of : Difference in layers of atoms Tetrahedral structure of diamond Difference of crystalline structures None of these Difference in layers of atoms Tetrahedral structure of diamond Difference of crystalline structures None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used for dating very old objects of archaeological importance? Tritium Phosphorus-31 Radium Carbon-14 Tritium Phosphorus-31 Radium Carbon-14 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Who is known as the 'father of modern chemistry' Robert Boyle Antoine Lavoisier John Dalton Democritus Robert Boyle Antoine Lavoisier John Dalton Democritus ANSWER DOWNLOAD EXAMIANS APP
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
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