Which one of the following minerals is found in pure form
1). Iron
2). Copper
3). Bauxite
4). Manganese
1. Iron is prevented from rusting by coating with zinc. This process is called as
2. Glycol is used to manufacture which of the following ?
3. The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is
4. The metal extracted from Bauxite is
6. Which of the following is a metallic ore ?
7. Ethylene is a ______ molecule.
8. Ozone is an ______ of oxygen.
9. Question 3.11:Suggest a list of metals that are extracted electrolytically.
10. The residue left after extracting juice from sugar beet and sugarcane is called