Question: Liquid nitrogen containers can be made from
[A].ferritic stainless steel
HSLA steel
titanium
austenitic stainless steel
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
On decreasing the grain size of a polycrys-talline material, the property most likely to deteriorate is
Question: On decreasing the grain size of a polycrys-talline material, the property most likely to deteriorate is
[A].creep
toughness
tensile strength
fatigue
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
If A x B means A is to the south of B; A + B means A is to the north of B; A % B means A is to the east of B; A – B means A is to the west of B; then in P % Q + R – S, S is in which direction with respect to Q?
Question: If A x B means A is to the south of B; A + B means A is to the north of B; A % B means A is to the east of B; A – B means A is to the west of B; then in P % Q + R – S, S is in which direction with respect to Q?
[A].South-West
South-East
North-East
North-West
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
According to P % Q + R – S
S is in the South-East of Q.
In BOF, desiliconisation is a first order reaction. So the silicon content of the metal decreases
Question: In BOF, desiliconisation is a first order reaction. So the silicon content of the metal decreases
[A].linearly with time.
exponentially with time.
logarithmically with time.
in proportion to the square root of time.
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
With increase in annealing temperature, the following defect density decreases.
Question: With increase in annealing temperature, the following defect density decreases.
[A].Vacancy
Dislocation
Grain boundary
All of them
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
Dislocation cross-slip is difficult in those materials, which have
Question: Dislocation cross-slip is difficult in those materials, which have
[A].large number of slip systems.
high work hardening rate.
coarse grain size.
low stacking fault energy.
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
Malleabilisation heat treatment is performed on
Question: Malleabilisation heat treatment is performed on
[A].cast steel
grey cast iron
white cast iron
spheroidal graphite cast iron
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Identify the correct statement with reference to the extractive metallurgy of aluminium.
Question: Identify the correct statement with reference to the extractive metallurgy of aluminium.
[A].The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3.
Approximately 80% of the aluminium deposited on the cathode comes from cryolite.
Sodium is deposited along with aluminium, but is immediately vaporised.
Anode effect sets in when the cryolite concentration goes below 40%.
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Identify the correct statement.
Question: Identify the correct statement.
[A].Sphlerite is zinc oxide.
The first law of the thermodynamics is stated as δE = δQ – δW.
Lead can be produced in a blast furnace.
T. ferrooxidans is a fungus that can be used for leaching chalcopyrite.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Draft allowance given to patterns is for
Question: Draft allowance given to patterns is for
[A].compensating the liquid state shrinkage.
easy removal of pattern from the mold cavity.
providing support for the core placement.
compensating the solidification shrinkage.
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.