Which of the following represents the allotropic forms of iron?
A. Alpha iron, beta iron and gamma iron
B. Alpha iron and beta iron
C. Body centered cubic iron and face centered cubic iron
D. Alpha iron, gamma from and delta iron
Answer: Option D
A. Alpha iron, beta iron and gamma iron
B. Alpha iron and beta iron
C. Body centered cubic iron and face centered cubic iron
D. Alpha iron, gamma from and delta iron
Answer: Option D
Manganese is added in low carbon steel to
A. Make the steel tougher and harder
B. Raise the yield point
C. Make the steel ductile and of good bending qualities
D. All of the above
The elastic stress strain behavior of rubber is
A. Linear
B. Nonlinear
C. Plastic
D. No fixed relationship
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