1. Malleable iron
2. Nodular iron
3. Steroidal iron
4. Grey iron
Malleable iron
1. Which are destroyed by burning
2. Which after their destruction are recycled to produce fresh steel
3. Which are deoxidized in the ladle with silicon and aluminum
4. In which carbon is completely burnt
5. Which have poor properties due to improper manufacturing?
Which are deoxidized in the ladle with silicon and aluminum
1. 0.025%
2. 0.26%
3. 0.8%
4. 2.1%
2.1\%
1. Introduces a compressive layer on the surface
2. Raises the yield point of the material
3. Produces a better surface finish
4. Suppresses any stress concentration produced in the component
Introduces a compressive layer on the surface
1. Mild steel
2. Cast iron
3. H.S.S
4. High carbon steel
High carbon steel
1. Inert
2. Nascent nitrogen
3. Liquid nitrogen
4. Ammonia
Ammonia
1. Composition of metal
2. Hardness of materials
3. Wear criterion of metals
4. Tensile strength of metals
Hardness of materials
1. RC 65
2. RC 48
3. RC 57
4. RC 80
RC 65
1. Cast iron
2. Mild steel
3. Nonferrous materials
4. Stainless steel
Stainless steel
1. Substititional solution
2. Interstitial solid solution
3. Inter metallic compound
4. All of these
Interstitial solid solution