JEE Main Chemistry question

Chemistry General Principles and Processes of Isolation of Elements (Metallurgy)JEE Main

Not in JEE Main or NEET syllabus

Railway wagon axles are made by heating iron rods embedded in charcoal powder. This process is known as

(A)Tempering
(B)Case hardening
(C)Sherardising
(D)AnnealingCorrect

Answer: (D)

Solution

Heating a hot iron rod slowly and then cooling it slowly (here by embedding it in charcoal powder) to relieve internal stresses and prevent breakage from sudden temperature change is called annealing. Case

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-147171