Alpha iron is stable ______________ °C?
Alpha iron is stable ______________ °C?
A. Above 1403
B. Upto 910
C. Above 1800
D. Between 910 & 1403
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Presence of nitrogen in steel___________________?
Presence of nitrogen in steel___________________?A. Makes it brittle
B. Increases its strength
C. Increases its hardness
D. Is desirableManganese in steel affects its__________________?
Manganese in steel affects its__________________?A. Ductility
B. Tensile strength
C. Hardness
D. None of theseKel-F is a material, which is
Question: Kel-F is a material, which is
[A].chemically known as polychlorotrifluor-oethylene (PTFE). [B].
having excellent chemical & high temperature resistance (upto 200°C). [C].
having elastomeric properties. [D].
all (a), (b) and (c). Answer: Option D
Explanation:
No answer description available for this question.
Gas holder of a gobar (cow-dung) gas plant is made of___________________?
Gas holder of a gobar (cow-dung) gas plant is made of___________________?A. Molybdenum stainless steel
B. Tin
C. Mild steel
D. AluminiumWhich of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70% ?
Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70% ?A. Cast iron
B. Steel
C. Nickel
D. KarbateWhich of the following is the most prone to atmospheric corrosion ?
Which of the following is the most prone to atmospheric corrosion ?A. Silver
B. Iron
C. Tin
D. Copper