The best guide to judge the general quality of water is the measurement of its

A. pH value

B. Electrical conductivity

C. Turbidity

D. Dissolved oxygen content

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

You can do it
  1. Electrochemical corrosion can occur, only if __________ is present in contact with metal.
  2. Out of the following, the __________ pipe has the least corrosion resistance.
  3. For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be
  4. Which of the following is prone to cup and cone fracture?
  5. Large scale fire on fuel gas line is normally extinguished by
  6. With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.
  7. In practice, the compression ratio of compression-ignition (CI) engine ranges from
  8. Maximum consumption of limestone is in the __________ industry.
  9. Holes for riveting purposes should be preferably made by
  10. __________ has the highest melting point out of the following.
  11. Addition of __________ to steel does not help in improving its machinability.
  12. Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the
  13. __________ is not a case hardening process.
  14. Silicon percentage in the silicon steel used for electrical appliances/equipments is
  15. Pick out the correct statement
  16. When an isolated thermodynamic system executes a process,
  17. The only suitable method for hardening the low carbon steel is case hardening. Which of the following…
  18. In extrusion of metals, which of the following statement is true?
  19. Which of the following is not the commercial name of poly-methyl-methacrylate (PMMA)?
  20. A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure…
  21. Pick out the wrong statement about nucleate boiling.
  22. The temperature at which ferromagnetic material can no longer be magnetised by the outside forces, is…
  23. Air standard Otto cycle is more efficient than the diesel cycle for the same
  24. Unit of surface tension in S.I. unit is
  25. Hardening of steel is not possible, unless it is heated __________ critical point.
  26. The product (s) of roasting of a sulphide ore is (are)
  27. Friction factor for fluid flow in pipe does not depend upon the
  28. Unit of viscosity in CGS system is
  29. With increase in compression ratio, the volumetric efficiency of air compressor
  30. The most important requirement for aluminium industry is the availability of cheap