📝 Multiple Choice Question
General-science
In the extraction of Aluminium (Hall-Heroult process), cryolite is added to alumina to:
A
increase the melting point
B
lower the melting point and increase conductivity
C
act as an oxidizing agent
D
remove impurities of iron
Explanation
Cryolite lowers the melting point of alumina from 2050°C to approx 950°C and makes the melt more conductive.
Report Issue
Discussion (0 Comments)
Leave a Comment
No comments yet. Be the first to comment!
📌 Related Questions
Which among the following is used as an 'Anesthetic'?...
Solve →Which among the following is used in 'Making' permanent magnets?...
Solve →Why cannot we write the chemical formula of a compound formed by chlor...
Solve →Which chemical is used to preserve biological specimens in laboratorie...
Solve →Which of the following is the common name for the reaction of an acid ...
Solve →