Purification And Characterisation Of Organic Compounds Question 70
Question: Alumino-thermic process is used for the extraction of metals, whose oxides are
Options:
A) Fusible
B) Not easily reduced by carbon
C) Not easily reduced by hydrogen
D) Strongly basic
Show Answer
Answer:
Correct Answer: B
Solution:
Alumino thermite process involves reduction of oxides such as $ Fe_2O_3,Mn_3O_4,Cr_2O_3 $ etc.
to metals with aluminum.
$ Cr_2O_3+2Al\to Al_2O_3+2Cr $
$ \Delta H=-ve $
BETA
