Manganese and Its Production

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Which of the following item(s) is/are manufactured using Manganese?

1. Bleaching powder
2. Insecticides
3. Paints
4. Chalk

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Manganese that is found in the ocean floor is called ______.

1. Manganese nodules
2. Magnetite
3. Hematite
4. Common salt

Q. Manganese is used to make.

1. steel
2. iron
3. magnesium
4. copper