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ESE EC 2018 Achiever Study Plan: Material Science Quiz 1

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Question 1

Consider the following statements:
1) The critical magnetic field of a superconductor is maximum at absolute zero.
2) Transition temperature of a superconductor is sensitive to its structure.
3) The critical magnetic field of a superconductor is zero at its critical temperature.
4) Superconductors show very high conductivity below the critical temperature.
Which of the above statements are correct?

Question 2

Match elements with their correct crystal structure?

Question 3

Which among the following platinum metals are not used in electrical contacts?
i. Osmium
ii. Iridium
iii. Palladium
iv. Ruthenium

Question 4

Find the d220 of aluminum, if its lattice constant is 4.041 angstroms?

Question 5

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Jun 11ESE & GATE EC