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Platinum
Mercury
Iron
Gold
Which of the following metals is commonly used to increase the strength of steel alloys?
Which of the following metals is not a pollutant ?
Which of the following of the process is known as nitrification
Which of the following of these acids is not organic in origin
Which of the following one of the following acids is used in battery -
Which of the following one of the following elements exhibits the greatest tendency to lose electrons
Which of the following one of the following elements is an example of noble gas -
Which of the following one of the following forms of phosphorus is most reactive -
Which of the following one of the following is commonly known as Pond Silk -
Which of the following one of the following is found in kidney stones -