70) Brinell, Vickers and Rockwell Hardness Test are types of which type of Hardness measurement?
Anonymous Quiz
14%
Rebound Hardness
42%
Indentation Hardness
22%
Scratch Hardness
23%
Both option (a) and (b)
71) At room temperature in a 0.45 wt% carbon steel what are the microconstituents present?
Anonymous Quiz
13%
Ferrite +austenite
36%
Pearlite +proeutectoid ferrite
41%
Pearlite+ Proeutectoid cementite
10%
Pearlite+Asutenite
73) Which of the following is not a physical region or comoponents of a Blast Furnace in Iron Making?
Anonymous Quiz
16%
Upper Stack
45%
Tuyers
23%
Upper Bosh
16%
Throat
74) Which of the foolowing elements in steel is not a ferrite stabilizer?
Anonymous Quiz
16%
Silicon
41%
Chromium
33%
Vanadium
10%
Carbon
75) During Roasting of Sulphide Ore which diagram is most helpful?
Anonymous Quiz
25%
Ellingham Diagram
41%
Predominance Area Diagram
16%
Rist Diagram
18%
Schaefflar Diagram
76) A definite upper and lower yiled point are found in the stress-strain cuve of which of the following material?
Anonymous Quiz
24%
High carbon Steel
33%
Aluminium
34%
Mild Steel
10%
Copper
77) Related to solidification which of the following statement is TRUE? #GATE 2022
Anonymous Quiz
11%
Supercooling is not necessary for the solidification of pure metals and alloys
28%
A pure metal solidifies over a range of temperature.
41%
The driving force for solidifcation(ΔGv) is inversely proportional to the degree of supercooling
20%
An alloy with eutectic composition solidifies at a particular freezing temperature
78) Which of the following metal working operation should be carried out to produce collapsible toothpaste tubes? #GATE 2022
Anonymous Quiz
17%
Closed die forging
49%
Direct Extrusion
23%
Deep drawing
11%
Impact Extrusion
79) Which of the following flame in oxy-acetylene gas welding is most suitable for welding of Stainless Steel? #GATE 2022
Anonymous Quiz
29%
Oxidising flame
29%
Neutral flame
30%
Reducing flame
13%
Carburizing flame
80) A steel rod with 10 mm diameter is subjected to tensile load. At 10kN the rod shows a permanent elogation of 0.2%. What is the value of true yiled stress (in Mpa) at this point? #GATE 2022
Anonymous Quiz
18%
127.32
52%
127.58
23%
152.78
6%
160.32
81) The Gibbs Phase Rule for a condensed system is............
Anonymous Quiz
14%
F-P=C + 1
51%
F=C+P-1
22%
F+P=C+1
13%
F+P=C-1
82)Which of the following Invariant reaction is not found in Iron-Cementite phase diagram?
Anonymous Quiz
17%
Eutectoid
37%
Peritectic
30%
Peritectoid
16%
Eutectic
83) In Ellingham Diagram some the metal oxide line changes it's slope because of..............
Anonymous Quiz
3%
Changes in Temperature
48%
Changes in standard Gibbs free energy change
28%
Changes in Standard Enthalpy change
22%
Change in state of either the metal or the metal oxides or both in it's temperature range.
84) If two systems A&B are in thermal equilibrium with a third system C, then A&B will also be in thermal equilibrium with each other. This is the statement of which fundamental law of thermodynamics?
Anonymous Quiz
44%
Zeroth law of thermodynamics
21%
1st law of thermodynamics
28%
2nd law of thermodynamics
7%
3rd law of thermodynamics
85) Which of the following is not a Comminution process in Mineral Beneficiation?
Anonymous Quiz
17%
Jaw Crushing
38%
Ball Milling
36%
Forth Floatation
10%
Roll Crushing
86) Which of the following is not a Smelting Reduction process?
Anonymous Quiz
19%
COREX Process
33%
FINEX process
30%
MIDREX process
18%
HISMELT process
87) Addition of which of the following element in Intrinsic Silicon semiconductor results in formation of P-type semiconductor?
Anonymous Quiz
17%
Phosphorous
34%
Aluminum
41%
Antimony
8%
Arsenic
88) The ratio of the size of octahedral void to the tetrahedral void of FCC crystal structure is.................. #GATE 2022
Anonymous Quiz
16%
1.88
37%
1.84
36%
1.633
11%
1.75
89) Which of the following unit cell has maximum number of space lattices?
Anonymous Quiz
14%
Cubic
24%
Tetragonal
47%
Orthorhombic
14%
Monoclinic
90) Aluminum has atomic radius of 0.143 nm and has atomic weight of 26.98 g/mol. Find the theroritical density of Aluminum(g/cm3) upto two decimal.
Anonymous Quiz
16%
2.85
38%
2.63
36%
2.71
10%
2.58
91) Which of the following step is not a compulsory step for Metallography of metals or alloys?
Anonymous Quiz
10%
Etching
34%
Intermediate Polishing
42%
Final Polishing
14%
Mounting