A. 87% cementite & 13% Fe
B. 87% ferrite & 13% cementite
C. 93.33% ferrite & 6.67% C
D. 87% ferrite & 13% C
Related Mcqs:
- Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called_______________________?
A. Tempering
B. Hardening
C. Annealing
D. Normalising - Breakeven point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost________________?
A. Only
B. Plus variable cost
C. Plus overhead cost
D. Plus selling expenses - Rankine cycle comprises of two isothermal and two ___________________ processes?
A. Isobaric
B. Polytropic
C. Isentropic
D. None of these - Two wires of the same radius & material having length in the ratio of 1 : 2 are stretched by the same force. The strain produced in the two wires will be in the ratio of__________________?
A. 1 : 1
B. 1 : 2
C. 2 : 1
D. 1 : 4 - Milk is fat dispersed in water. It is an example of__________________?
A. Suspension
B. Emulsion
C. Gel
D. Solution - Dies for wire drawing are generally made of__________________?
A. Mild steel
B. Stainless steel
C. Carbides
D. High carbon steel - If the head is doubled in & centrifugal pump, the power required will increase in the ratio of__________________?
A. 23
B. 23/2
C. 25/2
D. 21/3 - Hardening of steel is not possible, unless it is heated _________________ critical point ?
A. Above the highest
B. Above the lowest
C. Between the first & second
D. Between the second & third - In the diving apparatus, helium is used along with oxygen, because it is ____________________?
A. Easily available
B. Not soluble in blood at high pressure
C. Lighter than nitrogen
D. Completely miscible with oxygen - The trace metal present in insulin is____________________?
A. Cu
B. Zn
C. Fe
D. Ni
