Energy to be supplied to the radioactive nucleus for the emission of a neutron is __________ MeV.

A. 0.8

B. 7.8

C. 200

D. 10000

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  1. An ideal material for making cooking vessels should have
  2. Chlorine acts as a bleaching agent only in the presence of
  3. Yield strength of a polycrystalline metal with an average grain size d, is proportional to
  4. Metal shots used in shot blasting are made of
  5. Biological shield in a nuclear reactor is generally provided to protect against the
  6. Addition of __________ to steel does not help in improving its machinability.
  7. Oxide layer formed on the non-ferrous metal surface after its annealing is
  8. Which of the following phenomenon/ phenomena is/are diffusion controlled?
  9. Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when
  10. Hardening of steel is not possible, unless it is heated __________ critical point.
  11. Diffusion co-efficient of a metal in a solid solution depends upon its
  12. Quartz is a __________ material.
  13. Load cells used for the measurement of weight has
  14. Stainless steel is welded using
  15. __________ of test specimens is not involved in any hardness testing method.
  16. The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume :…
  17. An alloy of Fe - 0.4 % C is
  18. Enzymes belong to the category of
  19. Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________…
  20. Which of the following is not a principal alloying element for the structural steel?
  21. Which of the following metals reacts violently with water?
  22. Reduction in the grain size reduces the __________ of the material.
  23. Thermit welding is categorised as the __________ welding.
  24. A reduction in thermal resistance during heat transfer does not occur in the
  25. Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal &…
  26. The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used.…
  27. Which of the following material handling equipments is not suitable for moving materials in varying…
  28. Case hardening of a material is
  29. In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________…
  30. Pick out the correct combination about the role of various additives used in polymers.