Group 1 Elements

Q. In the manufacture of metallic sodium by the fused salt electrolysis (Down's process) a small amount of calcium chloride is added to

1. Increase the temperature of electrolysis
2. Bring down the melt temperature
3. Improve the electrical conduction
4. Stabilize the metallic sodium

Q. Which of the following does not belong to Group IA ?

1. Mg

2. K

3. Li

4. Rb

Q. Give reason for the following:
The ratio of hydrogen and oxygen formed at the cathode and anode is $2:1$ by volume.

Q. Which one of the following electrolytes is used in Down's process of extracting sodium metal?

1. $NaCl+KCl+KF$
2. $N{a}_{2}C{O}_3$
3. $NaOH$
4. $NaHC{O}_3$

Q.

The Down’s process is used for the extraction of which alkali metal?

1. Na

2. Li

3. K

4. None of the Above