In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, = velocity gradient).





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  1. Pick out the wrong statement about the machinability of metals. Machinability of a metal
  2. The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where,…
  3. Heat transfer by __________ is almost absent in case of fluidised bed drying operation.
  4. Alcohols are not suitable as diesel engine fuel because the cetane number of alcohols is
  5. In case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean…
  6. With increase in temperature, the surface tension of water
  7. An alloy of Fe - 0.4 % C is
  8. Alloying elements present in Haynes stellite, which has superior performance than high speed steel,…
  9. Encyclopaedia of Chemical Technology has been
  10. Which of the following properties of a solid is not dependent on crystal imperfection?
  11. __________ glass is used in the mercury in glass thermometer meant for measuring a temperature of 500°C.
  12. While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen…
  13. Which of the following does not discharge the dust collected as a dry solid?
  14. A common disinfectant used in village wells for disinfection of water is
  15. For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other…
  16. Magnesium is present in
  17. Glass reacts with
  18. In the acid Bessemer process, the hot metal should have the following composition.
  19. Electrometallurgy is not involved in the extraction of __________ from its ore.
  20. Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of Portland cement.…
  21. Air intake for an air compressor should be preferably taken from
  22. A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure…
  23. Fog is an example of colloidal system of
  24. Dislocations are __________ defects.
  25. Main constituent of bone ash is
  26. The dimensional formula of bulk modulus of elasticity is same as that of the
  27. The thermodynamic law, = constant, is not followed by the
  28. The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm2.
  29. The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.
  30. Hardening of steel is not possible, unless it is heated __________ critical point.