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Silver and Gold
Zinc and Gold
Copper and Silver
Copper and Gold
Which metal pollute the air of a big city
Bell metal is an alloy of
Water is a good solvent of ionic salts because
Which of the following is not an isotope of hydrogen
the main constituents of pearls are
Amalgams are
lightest metal is the
Which of the metals remain in liquid for under normal conditions
Potassium Permanganate is used for purifying drinking water
Which of the following is an element