Extraction of Metal

Q.

Zinc is obtained from zinc oxide by the process of:

1. Reduction

2. Distillation

3. Oxidation

4. Galvanization

Q.

Which of the following metals is found in the free state?

1. Sodium

2. Platinum

3. Iron

4. Aluminium

Q.

Gold is found in the free state because:

1. It is present at the top of activity series

2. It is present at the bottom of activity series

3. It is present in the middle of activity series

4. Gold is highly reactive metal

Q.

Why is Zinc chromate bright yellow?

Q. The metals that are found in free state are generally present _______ of the activity series.

1. at the bottom
2. in the middle
3. at the top
4. above hydrogen