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Sodium
Oxygen
Chlorine
Fluorine
Which of the following elements has the lowest melting point?
Which of the following elements is not radio-active ?
Which of the following English physicians is also called the father of immunology?
Which of the following foods does not support bacterial growth?
Which of the following gas does not form the part of atmosphere -
Which of the following gas is used in the Yellowish lamps used as street Lights?
Which of the following gases is associated with ‘acid rain’ ?
Which of the following genus bore the closest resemblance to modern man?
Which of the following has maximum Mass?
Which of the following has the least penetrating power?