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Oxides of nitrogen
Carbon monoxide
Lead
Polyclinic hydrocarbons
Which of the following is a characteristic of all minerals?
Which of the following is a compound?
Which of the following is a man-made source of air pollution ?
Which of the following is a monoatomic gas?
Which of the following is a natural polymer?
Which of the following is a non metal that remains liquid at room temperature ?
Which of the following is a radioactive element?
Which of the Following is an Amorphous solid?
Which of the following is caused by the higher concentration of Nitrogen and Phosphorous?
Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ?