Q136
Addition of silicon to aluminium results in
A.
Improvement of casting characteristics
AnswerB.
Improvement of corrosion resistance
C.
One of the best known age and precipitation hardening systems
D.
Improving machinability
Answer: Option A
Solution
Answer: Option A
Solution:
addition of silicon is for ease of casting.Silicon is good in metallic alloys used for casting.
This is because it increases the fluidity of the melt, reduces the melting temperature, decreases the contraction associated with solidification and is very cheap as a raw material