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With increase in temperature, the surface tension of water

A. Increases

B. Decreases

C. Remain constant

D. Increases linearly

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  1. __________ is used as a material of construction for the blade of power saw.
  2. __________ of test specimens is not involved in any hardness testing method.
  3. Which of the following is an example of stress corrosion?
  4. Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.
  5. Ceramic compounds as compared to metallic compounds
  6. Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as
  7. Ammonia gas can be dried by
  8. The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.
  9. Which of the following fastening devices has its both ends threaded?
  10. Limestone addition in the blast furnace is done to flux __________ present in the raw materials.
  11. Carnot cycle is also termed as the constant __________ cycle in thermodynamics.
  12. Starting friction is low in case of the __________ lubrication.
  13. The activity of pure hydrogen gas at 1000°C and 5 atm pressure
  14. The dew point temperature lines on psychrometric charts are straight inclined sloping downwards to the…
  15. Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with…
  16. Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium
  17. Heat flow across a hollow sphere of inner radius 'r1' and outer radius 'r2' is directly proportional…
  18. If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________…
  19. The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used.…
  20. Out of the following, the lowest packing of atoms exists in __________ crystal lattice structure.
  21. Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed…
  22. __________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where…
  23. Routing in production, planning & control is concerned with the
  24. Percentage of differential pressure lost in a Venturimeter with a tapering of 15° may be about
  25. Compressed dry air is used as the cutting fluid, while machining
  26. An example of unsteady non uniform flow is the flow of liquid under pressure through a
  27. The most serious manufacturing defect from fracture toughness point of view is
  28. Sand used to stop the green sand from sticking to the pattern is termed as the __________ sand.
  29. Otto cycle used in spark ignition petrol engines is also known as the constant __________ cycle.
  30. Which of the following is not a principal alloying element for the structural steel?