Which one of the following minerals is found in pure form?
1). Iron
2). Copper
3). Bauxite
4). Manganese
Answer This Question with Explaination and Earn! Click Here to Know More!
1. Which of the following is riot a greenhouse gas ?
3. Helium gas is used in gas balloons instead of hydrogen gas because it is
4. The material used in the manufacture of lead pencil is
6. Question 7.3:Discuss the trends in chemical reactivity of group 15 elements.
7. Hydrogen bomb is based on the principle of
8. The gas that usually causes explosions in coal mines is
9. The coloured discharge tubes foradvertisement mainly contain