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प्रश्न
Which of the following is highly toxic?
विकल्प
Carbon dioxide
Carbon monoxide
Calcium carbonate
Sodium bicarbonate
MCQ
उत्तर
Carbon monoxide
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
Which of the following is highly toxic?
Carbon dioxide
Carbon monoxide
Calcium carbonate
Sodium bicarbonate
Carbon monoxide