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## Askmemetallurgy Latest Questions

Dhaval dave

Asked: July 6, 2021In: Uncategorised

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21.43%A ( 6 voters )

17.86%B ( 5 voters )

46.43%C ( 13 voters )

14.29%D ( 4 voters )

Based On 28 Votes

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36.62%Aluminium ( 26 voters )

57.75%Iron ( 41 voters )

4.23%Nickel ( 3 voters )

1.41%Cobalt ( 1 voter )

Based On 71 Votes

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67.21%(A) 1705 kg, 431 kg ( 41 voters )

3.28%(B) 2131 kg, 546 kg ( 2 voters )

24.59%(C) 1705 kg, 331 kg ( 15 voters )

4.92%(D) 1500 kg, 431 kg ( 3 voters )

Based On 61 Votes

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79.17%(A) P-2, Q-1, R-4, S-3 ( 19 voters )

8.33%(B) P-4, Q-1, R-2, S-3 ( 2 voters )

8.33%(C) P-4, Q-3, R-1, S-2 ( 2 voters )

4.17%(D) P-2, Q-3, R-4, S-1 ( 1 voter )

Based On 24 Votes

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70.83%(A) ∆𝑃𝑅 / 2𝐿 ( 17 voters )

12.5%(B) ∆𝑃𝑅/ 𝐿 ( 3 voters )

16.67%(C) 3∆𝑃𝑅 / 2𝐿 ( 4 voters )

0%(D) 2∆𝑃𝑅 / 𝐿

Based On 24 Votes

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68.42%(A) 200 K, 0.5 K W-1 ( 13 voters )

15.79%(B) 400 K, 1.0 K W-1 ( 3 voters )

10.53%(C) 200 K, 0.25 K W-1 ( 2 voters )

5.26%(D) 500 K, 0.5 K W-1 ( 1 voter )

Based On 19 Votes

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60%(A) [1̅01](111) ( 18 voters )

26.67%(B) [1̅10](111) ( 8 voters )

3.33%(C) [101](111̅) ( 1 voter )

10%(D) [011](111̅) ( 3 voters )

Based On 30 Votes

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10.61%(A) An oversized solute atom would preferentially migrate below the slip plane of an edge dislocation. ( 7 voters )

57.58%(B) A spherically symmetric point defect can interact with both the hydrostatic and shear stress fields of a dislocation. ( 38 voters )

18.18%(C) A point defect can locally modify the elastic modulus and thereby can change the interaction energy. ( 12 voters )

13.64%(D) Vacancies are attracted towards the compressive region of dislocation. ( 9 voters )

Based On 66 Votes

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10.71%(A) D𝐻𝑠𝑜𝑙𝑖𝑑 mix= 0 and D𝐻𝑙𝑖𝑞𝑢𝑖𝑑 = 0 𝑚𝑖𝑥 ( 3 voters )

67.86%(B) D𝐻mix 𝑠𝑜𝑙𝑖𝑑 ≪ 0 and D𝐻𝑙𝑖𝑞𝑢𝑖𝑑 = 0 𝑚𝑖𝑥 ( 19 voters )

10.71%(C) D𝐻mix 𝑠𝑜𝑙𝑖𝑑 > 0 and D𝐻𝑙𝑖𝑞𝑢𝑖𝑑 = 0 𝑚𝑖𝑥 ( 3 voters )

10.71%(D) D𝐻mix 𝑠𝑜𝑙𝑖𝑑 = 0 and D𝐻𝑙𝑖𝑞𝑢𝑖𝑑 << 0 𝑚𝑖𝑥 ( 3 voters )

Based On 28 Votes

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3.85%(A) 0 ( 2 voters )

9.62%(B) 1 ( 5 voters )

75%(C) 2 ( 39 voters )

11.54%(D) 3 ( 6 voters )

Based On 52 Votes

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6.9%(A) P-4, Q-3, R-2, S-1 ( 2 voters )

10.34%(B) P-2, Q-1, R-3, S-4 ( 3 voters )

82.76%(C) P-2, Q-1, R-4, S-3 ( 24 voters )

0%(D) P-3, Q-2, R-1, S-4

Based On 29 Votes

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5.88%(A) P-1, Q-2, R-3, S-4 ( 1 voter )

76.47%(B) P-3, Q-1, R-4, S-2 ( 13 voters )

17.65%(C) P-3, Q-4, R-1, S-2 ( 3 voters )

0%(D) P-1, Q-4, R-3, S-2

Based On 17 Votes

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56.67%(A) 3 ( 17 voters )

26.67%(B) 1 ( 8 voters )

16.67%(C) 4 ( 5 voters )

0%(D) 6

Based On 30 Votes

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5.08%(A) Roasting ( 6 voters )

88.14%(B) Leaching ( 104 voters )

3.39%(C) Zone refining ( 4 voters )

3.39%(D) Smelting ( 4 voters )

Based On 118 Votes

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61.86%(A) Silicon ( 73 voters )

18.64%(B) Carbon ( 22 voters )

10.17%(C) Manganese ( 12 voters )

9.32%(D) Phosphorus ( 11 voters )

Based On 118 Votes

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7.14%(A) Concentration versus time plot is a straight line. ( 1 voter )

57.14%(B) Increase in concentration of reacting species increases the rate of reaction. ( 8 voters )

7.14%(C) Half-life depends on the initial concentration and zero-order rate constant. ( 1 voter )

28.57%(D) Rate of reaction depends on temperature. ( 4 voters )

Based On 14 Votes

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For a zeroth order chemical reaction, which one of the following is FALSE?

**For a zeroth order chemical reaction, which one of the following is FALSE?**

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6.78%(A) Oil > Water > Brine > Air ( 4 voters )

20.34%(B) Brine > Oil > Water > Air ( 12 voters )

59.32%(C) Brine > Water > Oil > Air ( 35 voters )

13.56%(D) Water > Brine > Oil > Air ( 8 voters )

Based On 59 Votes

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13.95%(A) Nickel ( 6 voters )

13.95%(B) Manganese ( 6 voters )

11.63%(C) Carbon ( 5 voters )

60.47%(D) Silicon ( 26 voters )

Based On 43 Votes

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70.21%(A) The minimum creep rate is obtained in the primary stage (stage I). ( 33 voters )

12.77%(B) Creep resistance decreases with decrease in grain size. ( 6 voters )

4.26%(C) Coble creep occurs via grain boundary diffusion. ( 2 voters )

12.77%(D) Nabarro-Herring creep occurs via lattice diffusion. ( 6 voters )

Based On 47 Votes

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9.52%(A) True stress is always higher than the engineering stress. ( 4 voters )

66.67%(B) At the ultimate tensile stress point on the true stress - strain curve, 𝑑 sigma/ d E = 0 𝑑 ( 28 voters )

11.9%(C) Resilience is the area under the elastic region of the engineering stress - strain curve. ( 5 voters )

11.9%(D) Maximum true stress does not correspond to the maximum load. ( 5 voters )

Based On 42 Votes

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3.13%(A) 𝐼𝑓 delta 𝑯𝒎𝒊𝒙= 0, then 𝑎𝐵 < 𝑋𝐵 ( 1 voter )

6.25%(B) 𝐼𝑓 delta Hmix = 0, then 𝑎𝐵 > 𝑋𝐵 ( 2 voters )

9.38%(C) 𝐼𝑓 delta Hmix > 0, then 𝑎𝐵 < 𝑋𝐵 ( 3 voters )

81.25%(D) 𝐼𝑓 delta Hmix< 0, then 𝑎𝐵 < 𝑋𝐵 ( 26 voters )

Based On 32 Votes

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4.17%(A) ( 1 voter )

0%(B)

29.17%(C) ( 7 voters )

66.67%(D) ( 16 voters )

Based On 24 Votes

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25.49%(A) Investment casting ( 39 voters )

6.54%(B) Die casting ( 10 voters )

4.58%(C) Squeeze casting ( 7 voters )

63.4%(D) Directional solidification ( 97 voters )

Based On 153 Votes