Engineering Materials
Neutral solution is one which has pH value

Greater than 7
Less than 7
pH value has nothing to do with neutral solution
Equal to 7

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Engineering Materials
Cyaniding is the process of

Adding carbon and nitrogen by heat treatment of steel to increase its surface hardness
Dipping steel in cyanide bath
Obtaining cyanide salts
Reacting steel surface with cyanide salts

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Engineering Materials
Nickel in steel

Improves wear resistance, cutting ability and toughness
Improves cutting ability and reduces hardenability
Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties
Gives ductility, toughness, tensile strength and anti-corrosion properties

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