সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন
Which of the following is the most toxic gas?
Which of the following is the most toxic gas?
- ক. nitrogen
- খ. hydrogen
- গ. carbon dioxide
- ঘ. carbon monoxide
সঠিক উত্তরঃ carbon monoxide
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Basic Information of Daily Science, Inventions and...