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Ferromagnetic materials owe their properties to __________ inner sub-shells.

A. Completely filled

B. Partially filled

C. Equally filled

D. Vacant

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  2. Hydrogen in liquid steels is dissolved
  3. The behaviour of a metal specimen, which when plastically strained in tension reduces its yield stress…
  4. Joule-Thomson co-efficient is the ratio of
  5. Super conduction in metals is observed at a temperature of __________ °K.
  6. LVDT used for displacement measurement is a/an __________ transducer.
  7. Pick out the wrong statement about coating/electroplating of metals.
  8. Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying…
  9. For the irreversible reaction, Ca+ 2C = Ca C2 , Δ H°298 = - 60000 J . mole-1 . If a system…
  10. Hardening of steel is not possible, unless it is heated __________ critical point.
  11. Oxygen cylinders used for autogenous (cutting/welding) purposes are
  12. Sudden fall of atmospheric pressure by a large amount is an indication of the
  13. The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation…
  14. Runge-Kutta method is used to solve a/an
  15. The transition temperature at which all the ferromagnetic materials become paramagnetic materials is…
  16. A jig is used while __________ a hole.
  17. Viscoelastic behaviour is observed in __________ materials.
  18. Thermit welding is categorised as the __________ welding.
  19. Fibrous fracture is normally encountered in the __________ materials.
  20. The following thermocouple may be used for measuring temperature upto 1873°K.
  21. In the Bayer's process, bauxite is digested under pressure using
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  23. What is the range of tempering temperature (°C) for most of the materials?
  24. Iron content in Indian iron ore is about __________ percent.
  25. The normal stress is the same in all directions at a point in a fluid, only when the fluid
  26. Pick out the wrong statement.
  27. Titanium is produced by __________ of Ti Cl4.
  28. Pick out the wrong statement.
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  30. Pick out the wrong statement.