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1. Scanning electron microscopy (SEM) is a technique used to characterize a) the surface area b) the porosity c) the shape d) the crystal structure
1. Scanning electron microscopy (SEM) is a technique used to characterize
a) the surface area
b) the porosity
c) the shape
d) the crystal structure
2. The surface area of nanoparticle material is ........... bulk material once
a) Smaller than
b) Higher than
c) Equal to
3. To determine the composition we use the technique:
a) The BET gas adsorption
b) The TEM
c) The Energy-dispersive X-ray spectroscopy
d) The Optical spectroscopy
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