Engineering Materials
Cyaniding is the process of

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

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
The brown smoke during the operation of a Bessemer converter indicates that the

The brown smoke does not occur during the operation of a Bessemer converter
Silicon and manganese has burnt and carbon has started oxidizing
Air is burning out silicon and manganese
The converter must be titled to remove the contents of the converter

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Y-alloy contains

5 to 6% tin, 2 to 3% copper and rest aluminium
4 to 4.5% magnesium, 3 to 4% copper and rest aluminium
3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium
3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium

ANSWER DOWNLOAD EXAMIANS APP