সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন
One of the following metals, which one pollutes the air of a busy city?
One of the following metals, which one pollutes the air of a busy city?
- ক. lead
- খ. copper
- গ. cadmium
- ঘ. chromium
সঠিক উত্তরঃ lead
এ সম্পর্কিত আরো প্রশ্ন দেখুন
- Which of the following carries malaria?
- Every molecule of water contains-- Oxygen and --Hydrogen.
- Nameplates made of brass get discolured in air because of the presence of which of the following gases in the air?
- Who among following invented the steam engine?
- How many teeth does an average human adult have?
There are no comments yet.
Subject
Topic
Basic Information of Daily Science, Inventions and...