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Copper
Lead
Zinc
Mercury
Which one of the following mixture is homogeneous
Which one of the following pairs of metals constitutes the lightest metal and the heaviest metal, respectively?
Which one of the following substances does not have a melting point
Which one radiation has the highest energy ?
Which scientist discovered the Atomic Theory?
Which scientist discovered the radioactive element radium?
Which solution is most concentrated?
Which statement best describes an O3 molecule?
Which subatomic particle has a negative charge?
Which type of fire extinguisher is used for petroleum fire ?