সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
Which of the following is the only liquid metal?
Which of the following is the only liquid metal?
- ক. Mercury
- খ. Water
- গ. Hydrogen
- ঘ. Chlorine
সঠিক উত্তরঃ Mercury
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Basic Information of Daily Science, Inventions and...