Q. In Goldschmidt aluminothermic process, thermite contains
A) 3 part of $Al_{2}O_{3}$, and 4 part of $Al$
B) 3 parts of$\ Fe_{2}O_{3}$ and 2 parts of $Al$
C) 3 parts of$\ Fe_{2}O_{3}$ and 1 part of $Al$
D) 1 parts of$\ Fe_{2}O_{3}$ and 1 part of $Al$
Explanation
(c)
Goldschmidt in 1905 discovered a method for the reduction of haematite $(Fe_{2}O_{3})$ with aluminium metal. The process is known as aluminothermic process, as in this process, large heat is produced. In this, $Fe_{2}O_{3}$and aluminium are taken in 3:1 ratio and this mixture, known as thermite, is ignited to initiate the reaction, when $Fe_{2}O_{3}$is reduced to molten Fe.
$2Al + Fe_{2}O_{3} \longrightarrow Al_{2}O_{3} + 2Fe + 3230\ kJ$
molten
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.