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Nitrogen
Methane
Carbon dioxide
Chlorofluorocarbons
Which of the following one of the following is not coal variety
Which of the following one of the following is not transmitted via blood transfusion -
Which of the following one of the following is the tallest bird -
Which of the following one of the following is used as a sowing agent in the preparation of soft drinks
Which of the following one of the following is used for dating very old objects of archaeological importance -
Which of the following one of the following is used to restore the colour of old oil paintings
Which of the following one of the following is vastly used for sterilizing water
Which of the following one of the following metals is used to galvanise iron
Which of the following one of the following metals pollutes the air of a city having big number of automobiles
Which of the following one of the following minerals is found in Monazite sand -