While the recrystallisation temperature for pure metals is 0.3 Tm, the same for alloys is equal to __________ × Tm (where, Tm Melting temperature).

A. 0.25

B. 0.45

C. 0.70

D. 0.95

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. Change in volume of metals from absolute zero temperature to their melting points is
  2. Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles…
  3. __________ of grey cast iron produces white cast iron.
  4. Minimum number of members required to form a Public Limited Joint Stock Com-pany is
  5. Presence of nickel & chromium in steel does not raise its
  6. __________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in…
  7. Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion…
  8. With decrease in the grain size of a material, its creep resistance
  9. The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10-16 m2S-1 and it is 1.94 ×…
  10. Fibre glass is a composite material of
  11. Steel balls are manufactured by
  12. Pick out the wrong statement.
  13. Nickel and __________ are the alloying element added in steel to increase its toughness.
  14. Heat transfer by __________ is almost absent in case of fluidised bed drying operation.
  15. Ammonia gas can be dried by
  16. Ammonia leakage in the refrigeration system is detected by
  17. Which of the following metals is not subjected to electrolytic refining/purification?
  18. Ferromagnetic materials owe their properties to __________ inner sub-shells.
  19. Mho's scale of hardness, which consists of 10 standard minerals is used for the measurement of __________…
  20. Plastics as a material of construction suffer from the drawback of low
  21. For a spontaneous natural process at constant temperature and pressure, the free energy of the system…
  22. Sub zero treatment of steel is done to
  23. Globular form of cementite is formed during the __________ process.
  24. The thermodynamic law, = constant, is not followed by the
  25. Heating of ferromagnetic materials to a temperature above Curie temperature makes it
  26. __________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it…
  27. The size of the tetrahedral void in the closest packing of atoms is __________ that of the octahedral…
  28. Air-petrol ratio in an automotive petrol engine is around
  29. __________ joint is mostly used for joining pipes carrying water at low pressure.
  30. Silicon percentage in acid resistant cast iron is about