The crystal structure of gamma iron is_________________?

Question: In the middle part of the blast furnace (zone of absorption), the temperature is
[A].

400° to 700°C

[B].

800°C to 1000°C

[C].

1200°C to 1300°C

[D].

1500°C to 1700°C

Answer: Option B

Explanation:

No answer description available for this question.

Question: Grey cast iron has
[A].

carbon in the form of free graphite

[B].

high tensile strength

[C].

low compressive strength

[D].

all of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Malleable cast iron is produced
[A].

by adding magnesium to molten cast iron

[B].

by quick cooling of molten cast iron

[C].

from white cast iron by annealing process

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: Free cutting steels
[A].

contain carbon in free from

[B].

require minimum cutting force

[C].

is used where rapid machining is the prime requirement

[D].

can be cut freely

Answer: Option C

Explanation:

No answer description available for this question.