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31. Wind vane is used to
  A.  to measue the speed of wind
  B.  to measue the direction of wind
  C.  to measue the humidity of wind
  D.  to change the direction of wind
     
   
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32. Vacuum Gauge is used to measure: :
  A.  very low pressure
  B.  very low density
  C.  very high pressure
  D.  very high density
     
   
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33. Profilometer is used to measure:
  A.  volatility of liquids
  B.  the function of kidney
  C.  density of saliva
  D.  surface roughness
     
   
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34. Intensity of light as a function of wavelength is measured by:
  A.  Tintometer
  B.  Megger
  C.  Spectropotometer
  D.  Pycnometer
     
   
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35. Electromagnetic radiation is measured by:
  A.  Framing Square
  B.  Bolometer
  C.  Quadrat
  D.  Osmometer
     
   
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36. Katharometer is used:
  A.  to measure the width of oceans
  B.  to measure the sound intensity in vaccum
  C.  to measure the composition of gases
  D.  to measure the tension of wire
     
   
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37. Nephelometer is used to measure:
  A.  size of stars
  B.  height of mountains
  C.  to distance of objects under sea
  D.  particle in a liquid
     
   
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38. Which of the following instrudment is used to measure the height of a cloud base?
  A.  Ellipsometer
  B.  Ceilometer
  C.  Creepmeter
  D.  Interferometer
     
   
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39. Disdrometer is used to measure:
  A.  size, speed and velocity of raindrops
  B.  hazards especially by radiation
  C.  structure of crystals
  D.  gravity of liquids
     
   
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40. Orchidometer is used to:
  A.  locate underground bombs
  B.  Measure the speed of an spacecraft
  C.  meausre testicle size in male humans
  D.  measure size of prostate gland
     
   
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