202) Hall-Petch relationship gives which of the following type of strengthening mechanism?
Anonymous Quiz
21%
Solid solution
28%
Precipitation hardening
42%
Grain boundary strengthening
9%
Strain hardening
203) What is the product from the blast furnace?
Anonymous Quiz
28%
Cast iron
25%
Pig iron
37%
Wrought iron
11%
Steel
204) Which of the following is not an acid refractory?
Anonymous Quiz
21%
Fireclay
29%
Mullite
39%
Silica
12%
Magnesite
205) Which of the following are correct for dislocations? Burger vector is..I) perpendicular to the edge dislocation line II)parallel to the edge dislocation line III)perpendicular to the screw dislocation line IV)parallel to the screw dislocation line
Anonymous Quiz
15%
I & III
37%
II &III
36%
II &IV
11%
I &IV
206) Partial molar quantities are important for the study of which of the following?
Anonymous Quiz
21%
Ideal solutions
20%
For non metals
46%
For non-ideal solutions
14%
A pure component
207) A tensile specimen was fractured with original gauge length to final gauge length ratio of 0.83. Find the ratio of true Strain at fracture (ε)to engineering strain at fracture (e) upto two decimal. #GATE2022
Anonymous Quiz
13%
1.19
32%
0.52
40%
0.91
14%
0.69
208) The size of octahedral void in an FCC unit cell with lattice parameter of a is..............(up to three decimal)#GATE2022
Anonymous Quiz
28%
0.414a
33%
0.225a
35%
0.146a
3%
0.080a
209) Which of the following factor does not contribute to form Substitutional solid solution?
Anonymous Quiz
15%
Valency
27%
Crystal Structure
34%
Atomic weight
24%
Electronegativity
210) Which of the following crystal structure does not exist? #GATE2022
Anonymous Quiz
21%
Body Centred Tetragonal
22%
Face Centred Cubic
30%
Face Centred Monoclinic
27%
End Centred Orthorhombic
211) Partial molar quantities in a solution is determined by which of the following equations?
Anonymous Quiz
21%
Maxwell Equation
23%
Gibbs-Duhem equation
50%
Gibbs-Helmholtz equation
7%
Clausius-Claypeyron equation
212) Find the number of grains per square inch at 100× of a steel which has ASTM No of 6.
Anonymous Quiz
18%
16
38%
32
34%
63
10%
128
213) Which of the following metal working operation does not involve indirect compression during working?
Anonymous Quiz
20%
Extrusion
35%
Forging
35%
Wire Drawing
10%
Deep drawing
214) Which of the following Iron making process does not use non-coking coal as a reducing agent?
Anonymous Quiz
19%
Fastmet
27%
ITmk3
38%
Midrex
15%
Corex
215) What are the total number of variables in a system of P number of phases where number of components are C? #GATE2022
Anonymous Quiz
16%
C+1
39%
P(C-1)
22%
C-1
23%
P(C-1)+2
216) Which of the following is not an irregularities of Blast Furnace?
Anonymous Quiz
15%
Salamander
30%
Channelling
38%
Scaffolding
17%
Hot tear
217) The effective number of lattice points in a HCP unit cell is............#GATE2022
Anonymous Quiz
12%
2
28%
3
37%
4
23%
6
218) In which of the following region of Iron-Cementite phase diagram lever rule can be applied? #GATE2022
Anonymous Quiz
15%
At 723 degree Celcius
27%
At Ferrite region
46%
Below AC1 temperature in hypo eutectoid range
11%
Any where in the phase diagram lever rule can be applied
219) Which of the following option contains only Basic oxides?
Anonymous Quiz
18%
CaO,SiO2
21%
P2O5, MgO
46%
FeO,CaO,MgO
14%
CaO, P2O5, Al2O3
220) Which of the following equation provides the combination of 1st law &2nd law of thermodynamics?
Anonymous Quiz
23%
δq=TdS-PdV
31%
dE=TdS+PdV
30%
dE=dS-PdV
16%
TdS=dE+PdV
221) Hot working of metals or alloys are carried out..........
Anonymous Quiz
22%
Above upper critical temperature (AC3)
31%
Below upper critcal temperature (AC3)
38%
Above Recrytallization temperature
8%
Below Recrytallization temperature