Question:
Thermit welding comprises of
Thermit welding comprises of
Show Hint
Thermit = Al + Iron Oxide. This reaction is so hot it is used to weld train rails in remote locations.
Updated On: Jul 4, 2026
- Charcoal and iron oxide
- Charcoal and aluminium
- Charcoal and iron ore
- Aluminium and iron oxide
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Concept Thermit welding utilizes an exothermic chemical reaction between a metal oxide and a reducing metal to generate high heat.
Step 2: Meaning The "thermit" mixture must react to produce molten iron and slag without an external power source once ignited.
Step 3: Analysis The specific reaction involves Aluminum powder ($Al$) and Iron Oxide ($Fe_{2}O_{3}$ or $Fe_{3}O_{4}$). Because Aluminum has a higher affinity for oxygen, it reduces the iron oxide to molten iron.
Step 4: Conclusion Thus, the primary constituents of a Thermit welding mixture are Aluminium and Iron Oxide. Final Answer: (D)
Step 2: Meaning The "thermit" mixture must react to produce molten iron and slag without an external power source once ignited.
Step 3: Analysis The specific reaction involves Aluminum powder ($Al$) and Iron Oxide ($Fe_{2}O_{3}$ or $Fe_{3}O_{4}$). Because Aluminum has a higher affinity for oxygen, it reduces the iron oxide to molten iron.
Step 4: Conclusion Thus, the primary constituents of a Thermit welding mixture are Aluminium and Iron Oxide. Final Answer: (D)
Was this answer helpful?
0
0
Top AP ECET Metallurgical Eng Metallurgical Engineering Questions
- The crushing efficiency of a crusher is the ratio of
- Grindability of a material does not depend upon its
- Copper deposits are found in India at the following location
- Electrochemical corrosion can occur only if _____________ is present in contact with the metal.
- Hoop's process is predominantly used for the electrolytic refining of
View More Questions
Top AP ECET Metallurgical Eng Welding Questions
- Limitations of thermit welding is
- The protective gaseous atmosphere around the arc and weld pool in the case of arc welding is due to
- Function of a flux in brazing is to
- TIG is especially useful in welding
- "Cold cracking" in the heat affected zone of a high strength steel weld can take place because of
View More Questions
Top AP ECET Metallurgical Eng Questions
- Order of the matrix $\begin{bmatrix} 1 & 6 \\ 2 & 0 \\ 7 & -1 \end{bmatrix}$ is
- If two rows (or columns) of a determinant of order 3 are identical then the value of determinant is
- Co-factor of -4 in $\begin{vmatrix} 1 & 2 & 3 \\ -4 & 3 & 6 \\ 2 & -7 & 9 \end{vmatrix}$ is
- The Matrix $\begin{bmatrix} a & h & g \\ h & b & f \\ g & f & c \end{bmatrix}$ is
- If $A = \begin{bmatrix} 0 & 0 & 1 \\ 0 & 1 & 0 \\ 1 & 0 & 0 \end{bmatrix}$ then $(A^{-1}) =$
View More Questions