The instrument used for the examination of particle size ≥ 0.5 micron is ____________
A. Microscope
B. Electron microscope
C. Telescope
D. All of the mentioned
Answer:A
The instrument used for the examination of particle size ≥ 0.5 micron is ____________
A. Microscope B. Electron microscope C. Telescope D. All of the mentioned
Explanation: The instrument used for the examination of particle size ≥ 0.5 micron is