Q229
Pick up the wrong statement
A.
Aluminium in steel results in excessive grain growth
AnswerB.
Manganese in steel induces hardness
C.
Nickel and chromium in steel helps in raising the elastic limit and improve the resilience and ductility
D.
Tungsten in steels improves magnetic properties and hardenability
Answer: Option A
Solution
Answer: Option A
Solution:
Aluminum metal is used to make many parts produced by precision machining, and is finding increasing application in automotive because of its light weight and high strength to weight ratio.