Extraction of Metals Which Are Lower in the Reactivity Series

Q.

Which is the most reactive metal and the least reactive metal?

Q. Metals combine with oxygen to form metal-oxides.

1. False
2. True

Q. Which metalloid is the backbone of the electronics industry ?​​​​​

1. Silicon
2. Germanium
3. Arsenic
4. Antimony

Q. Select the one that occurs in native form :

1. Calcium
2. Aluminium
3. Sodium
4. Gold