The feasibility of a chemical reaction depends on which thermodynamic parameter?
Anonymous Poll
17%
Enthaly change
40%
Entropy Change
31%
Gibbs free change
11%
Helmholtz free energy change
Cementite has a crystal structure of.....
Anonymous Poll
29%
Body centred Tetragonal
37%
Orthorhombic
19%
Monoclinic
14%
Body Centred Cubic
Austenite in steel is a.........phase
Anonymous Poll
32%
Ferromagnetic
37%
Paramagnetic
27%
Diamagnetic
5%
None of these
The invariant reaction in a phase diagram which involves transformation of one liquid on heating from two different solid phase is called..........
Anonymous Poll
18%
Eutectoid
20%
Peritectic
31%
Peritectoid
22%
Eutectic
9%
Monotectic
The faliure of a material under repeatative load is called.....
Anonymous Poll
25%
Impact faiure
45%
Fatigue faliure
22%
Creep failure
7%
Ductile failure
The common invariant reaction that involves in Iron-Cementite phase diagram at any composition of carbon is.........
Anonymous Poll
23%
Eutectoid
42%
Peritectic
23%
Eutectic
13%
Monotectic
1) Purest form of iron among the following?
Anonymous Quiz
42%
Cast Iron
17%
Steel
36%
Wrought Iron
6%
None of these
2) Carbon with Iron can form only....?
Anonymous Quiz
23%
Compound
22%
Interstitial Solid Solution
21%
Substitutional Solid Solution
33%
Both option 1 and 2
3) Cementite is a.........phase?
Anonymous Quiz
30%
Equilibrium phase
50%
Metastable phase
17%
Unstable phase
3%
None of these
4) The property of a material by which it can be drawn into thin wire is called........
Anonymous Quiz
34%
Malleability
50%
Ductility
13%
Formability
3%
Machinability
5) The feasibility of a chemical reaction depends on which thermodynamic parameter?
Anonymous Quiz
17%
Enthaly change
46%
Entropy Change
28%
Gibbs free change
10%
Helmholtz free energy change
6) Cementite has a crystal structure of.....
Anonymous Quiz
25%
Body centred Tetragonal
35%
Orthorhombic
21%
Monoclinic
18%
Body Centred Cubic
7) Austenite in steel is a.........phase
Anonymous Quiz
39%
Ferromagnetic
38%
Paramagnetic
18%
Diamagnetic
5%
None of these
8) The invariant reaction in a phase diagram which involves transformation of one liquid on heating from two different solid phase is called..........
Anonymous Quiz
25%
Eutectoid
31%
Peritectic
30%
Peritectoid
14%
Monotectic
9) The faliure of a material under repeatative load is called.....
Anonymous Quiz
15%
Impact faiure
58%
Fatigue faliure
21%
Creep failure
6%
Ductile failure
10) The common invariant reaction that involves in Iron-Cementite phase diagram at any composition of carbon is.........
Anonymous Quiz
26%
Eutectoid
42%
Peritectic
23%
Eutectic
9%
Monotectic
GATE EXAM PDF
1) Purest form of iron among the following?
Answers of yesterday's polling
1)Wrought Iron
Explanation: Wrougt iron contains lowest amount of carbon among all the given options...so it can be easily deformed to form any shape...
Generally it's carbon content varies from 0.08 to 0.30 wt% but generally it is around 0.15 wt%
1)Wrought Iron
Explanation: Wrougt iron contains lowest amount of carbon among all the given options...so it can be easily deformed to form any shape...
Generally it's carbon content varies from 0.08 to 0.30 wt% but generally it is around 0.15 wt%
GATE EXAM PDF
2) Carbon with Iron can form only....?
2) both option 1 and 2
Explanation: Carbon can form interstitial Solid solution with like Ferrite, Austenite, Delta Ferrite.
It can form interstitial compund also which is Cementite (Fe3C).
So it can form only interstitial Solid solution and compund not the substitutional Solid solution.
Explanation: Carbon can form interstitial Solid solution with like Ferrite, Austenite, Delta Ferrite.
It can form interstitial compund also which is Cementite (Fe3C).
So it can form only interstitial Solid solution and compund not the substitutional Solid solution.