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Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an __________ body.

A. Grey

B. Black

C. Opaque

D. White

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

You can do it
  1. The best lubricants for a machine working at high temperature & load is
  2. Which of the following properties of a solid is not dependent on crystal imperfection?
  3. Heat transfer by __________ is almost absent in case of fluidised bed drying operation.
  4. Which of the following is not the commercial name of poly-methyl-methacrylate (PMMA)?
  5. At absolute zero temperature, for any reaction involving condensed phases
  6. Air-petrol ratio in an automotive petrol engine is around
  7. Case hardening is not done by
  8. If the demand for an item is trebled and the order cost is reduced to one third, then the economic order…
  9. Which of the following hardness tests does not measure the indentation hardness of metals and alloys?
  10. Mho's scale of hardness, which consists of 10 standard minerals is used for the measurement of __________…
  11. In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 =…
  12. The difference between gross & net calorific values of fuel is due to the
  13. In condensers used in thermal power plants, steam is normally used in shell side and cooling water on…
  14. Stainless steel is welded with difficulty because of
  15. Removal of non-condensable from steam or other vapour is termed as the __________ process.
  16. Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when…
  17. Breakeven point represents the condition, when the company runs under no profit no loss condition. In…
  18. Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.
  19. 'Dikes' are low height walls made around the storage vessels meant for storing hazardous & inflammable…
  20. Principal alloying element in Elinvar (used for making hair springs for watches) is
  21. at 1173E; at equilibrium, what will be the number of moles of CO gas required to reduce one mole of…
  22. Minimum number of members required to form a Public Limited Joint Stock Com-pany is
  23. Titanium is produced by __________ of Ti Cl4.
  24. A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K…
  25. Oxide layer formed on the non-ferrous metal surface after its annealing is
  26. __________ is used for tying the steel columns to concrete foundation.
  27. Which of the following alloying elements is present in maximum percentage in high speed steel?
  28. Cold working of a material results in increase in hardness, which is termed as the __________ hardening.
  29. The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.
  30. Which of the following is an undesirable property of slag produced during the Pyrometallurgical method…