Extracting of Metals towards the top of the Activity Series

Q. The metals like Na, K, Ca, Al are obtained by:

1. calcination
2. simple heating
3. roasting
4. electrolytic reduction

Q. Highly reactive elements are obtained by electrolysis of molten ore

1. True
2. False

Q. In the alumino thermic process the role of aluminium is of a _______.

1. sulphurising agent
2. reducing agent
3. hydrogenating agent
4. oxidising agent

Q. How many covalent bonds nitrogen can form?

[1 Mark]

Q. In a double bond connecting two atoms, there is a sharing of:

A) 2 electrons
B) 8 electrons
C) 4 electrons
D) 6 electrons

[1 Mark]