__________ flux is used for the extraction of metal from its self fluxing ores.

A. No

B. Acid

C. Basic

D. Neutral

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  1. Pick out the wrong conversion of absolute & kinematic viscosities.
  2. Metal shots used in shot blasting are made of
  3. Yield strength of a polycrystalline metal with an average grain size d, is proportional to
  4. Internal energy of a gas obeying Van-Der- Waals equation of state, [p + (a/v2)] (V - b) = RT, depends…
  5. With increase in impurities in metals, their corrosion resistances
  6. Limestone is added in the blast furnace (during pig iron manufacture) to
  7. As the fluid flow rate increases, the float of the Rotameter
  8. Bad odour in sanitary latrines is reduced by periodically sprinkling
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  10. Diffusion co-efficient of a metal in a solid solution depends upon its
  11. The mechanism which changes the value of manipulated variable in response to the output signal from…
  12. Which of the following does not have a sharp melting point?
  13. Which of the following metals reacts violently with water?
  14. __________ fluid force is not considered in the Navier-Stokes equation.
  15. At the point of boundary layer separation in fluid flow, the
  16. Current employed in resistance welding ranges from __________ kVA/.
  17. The behaviour of a metal specimen, which when plastically strained in tension reduces its yield stress…
  18. Water hammer is caused in steam carrying pipelines, because of
  19. The most commonly used moderator in nuclear power plants is
  20. Plants produce carbohydrates from the CO2 present in the atmosphere by
  21. Referring to the periodic table of elements, it is found that with increasing atomic number. The atomic…
  22. Cold working of a material results in increase in hardness, which is termed as the __________ hardening.
  23. Lead pencil contains
  24. Pick out the wrong statement.
  25. Cassiterite is an ore of
  26. More than 95% of __________ is present in corundum.
  27. Material of construction of foundry crucible is
  28. Which of the following commonly used condenser tube materials has the lowest thermal conductivity?
  29. In practice, the compression ratio of compression-ignition (CI) engine ranges from
  30. Unit of viscosity in CGS system is