CHEMISTRY ONE LINER SET 48

CHEMISTRY ONE LINER SET 48

1. Which metal is protected by the layer of its own oxide? Aluminum
 
2. The ore only two metals that are Non–Silver in colour, they are– Copper and gold
 
3. Siderite is an ore of– Iron
 
4. Which of the following process is used in the extraction of iron from the Iron
ore?
Reduction
 
5. Which one of the following metals cannot be used as an electromagnet? Copper
 
6. Quartz is a type of Silicon dioxide
 
7. Raw materials used in the manufacturing of glass are– Soda, Lime Stone Silica Sand ash
 
8. Ruby and sapphire are the oxides of – Aluminum
 
9. Which of the following is used in welding broken pieces of iron rails and parts of machine – Aluminum Powder
 
10. Which one of the following does not present in the Stainless Steel? Tungsten