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Speisses is a mixture of the following:

A. Arsenides of heavy metals

B. Antimonides of heavy metals

C. Arsenides & antimonides of heavy metals

D. Iron, cobalt and nickel

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

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  1. The most economical channel section for the fluid flow is the one for which the discharge is maximum…
  2. Hardening of steel is not possible, unless it is heated __________ critical point.
  3. Cassiterite is an ore of
  4. __________ metal is used as a bearing liner material.
  5. Which of the following is not a dielectric material?
  6. Breakeven point represents the condition, when the company runs under no profit no loss condition. In…
  7. __________ is not used as a material of construction in thermocouples.
  8. The difference between gross & net calorific values of fuel is due to the
  9. Neutrons are present in all atoms except that of
  10. Name the safety device used to protect the boiler, when the water level falls below a minimum level.
  11. Lead is poured into the joint between two- __________ pipes.
  12. The product out from a cupola is called
  13. Heat transfer by __________ is almost absent in case of fluidised bed drying operation.
  14. Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium
  15. Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed…
  16. __________ of hard alloy and tool steel is done to make it easily machinable.
  17. The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.
  18. In electrical resistance welding, distortion results from the use of improper
  19. Hot extrusion of aluminium is done in the temperature range of __________ °C.
  20. Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.
  21. Thermal conductivity of a material does not depend upon its
  22. The mechanism which changes the value of manipulated variable in response to the output signal from…
  23. Biological shield in a nuclear reactor is generally provided to protect against the
  24. The order of a chemical reaction
  25. Fire in fuel gas pipelines is extinguished most effectively by
  26. Which of the following has the highest modulus of elasticity (about 7 × 106 kg/cm2)?
  27. __________ pipe is the most suitable for carrying sanitary drainage.
  28. Plasma is
  29. Methyl orange indicator turns
  30. In extrusion of metals, which of the following statement is true?