Question

Which of the following is not used for extraction of Aluminium:

• A. van arkel process
• B. serpeck's process
• C. baeyer's process
• D. hall's heroult's process

Answer 1

The correct option is A van arkel process

Van-Arkel Method.

This method is used for ultrapure metal like $Ti,Zr$ etc. The metal is converted into its volatile stable compound such as $Ti{I}_4$ ,leaving behind the impurities. The stable volatile compound thus formed is decomposed to get the pure metal.

Van arkel process is one the refining process to get very pure metal. In this process the impure metal is converted into volatile lodides, which are again dissociated to get pure metal.