235) Which of the following pair is not TRUE?
Anonymous Quiz
14%
SL/RN : Rotary Klin
40%
COREX : Direct Reduction
26%
HyL I : Retort
20%
MIDREX: Sponge Iron
236) Foamy slag practice is carried out in which of the following chemical reactor?
Anonymous Quiz
27%
Blast Furnace
32%
LD converter
34%
Electric Arc Furnace
7%
Ladle Furnace
237) Which of the following is TRUE regarding Innoculant in Foundry process? #GATE2022
Anonymous Quiz
20%
Increases the density of the molten metal in mould cavity
44%
Increases the heterogeneous site for nucleation as a result fine grains are formed.
19%
Decreases the fluidity
17%
Increases the heterogeneous site for nucleation as a result coarse grains are formed.
238) Pitting corrosion of stainless steels is caused by which of the following environment?
Anonymous Quiz
19%
Ammonia
40%
Oxygen
32%
Chloride
9%
Nitrogen
239) Chevron cracking in Extrusion process occurs due to which of the following reason?
Anonymous Quiz
20%
Too high ram speed
39%
High extrusion ratio
30%
High frictional force
11%
Low extrusion ratio
240) In which of the of the following stage of creep the creep rate is constant?
Anonymous Poll
15%
1st stage
37%
2nd stage
27%
3rd stage
21%
Fracture stage
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240) In which of the of the following stage of creep the creep rate is constant?
Anonymous Poll
17%
1st stage
33%
2nd stage
29%
3rd stage
20%
Fracture stage
241) Ideal gas under adiabatic condition can be described by the equation PV^Ξ³ .Where Ξ³............?
Anonymous Quiz
15%
Cp/T
54%
Cp/Cv
23%
Cv/Cp
8%
CpxCv
242) What is the value entropy change for melting of Copper at 1083 degree Celcius. For Copper the heat of fusion= 12.97 kJ/mol. (find upto two decimal)
Anonymous Quiz
15%
11.98J/K/mol
50%
11.98 kJ/K/mol
26%
9.57 J/K/mol
8%
9.57 kJ/K/mol
243) Which of the following material shows Cup & Cone type fracture during Tensile testing?
Anonymous Quiz
23%
Cast Iron
30%
High Carbon Steel
26%
Ceramic Material
22%
Mild Steel
244) Coke is produced from Metallurgical coal by which of the following process?
Anonymous Quiz
17%
Carburization
23%
Carboformation
42%
Carbonisation
17%
Carbonation
245) Which of the following is not a Solid state welding process?
Anonymous Quiz
17%
Explosive welding
40%
Ultrasonic welding
28%
Electroslag welding
16%
Friction Welding
246) Which of the following elements does not shift the TTT diagram towards right?
Anonymous Quiz
17%
Chromium
30%
Vanadium
37%
Cobalt
17%
Molybdenum
247) In which of the following foundry process silica gel is used as a binder?
Anonymous Quiz
27%
Shell Moulding
21%
Investment casting
34%
Centrifugal casting
18%
CO2 moulding
248) Symmetrical shaped castings can be produced by which of the following process?
Anonymous Quiz
26%
Match plate pattern
21%
Sweep pattern
33%
Skeleton pattern
20%
Split pattern
249) In a binary dilute solution, which of the following is TRUE? #GATE2022
Anonymous Quiz
22%
Solute obeys Raoult's law Solvent obeys Henry's law
35%
Solute obeys Henry's law Solvent obeys Raoult's law
32%
Both Solute and Solvent obey Raoult's law
10%
Both Solute and Solvent obey Henry's law
250) If the true stress-true strain curve is given by by Ο=2000Ξ΅^0.33. What is the value of engineering strain when necking occurs (upto two decimal)? #GATE2022
Anonymous Quiz
33%
0.33
42%
0.55
18%
0.39
7%
0.67