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Multiple Choice Quiz on Electron Microscope

This quiz is designed to assess your understanding about the "Electron Microscope Basics". Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Score'. Percentage score will be displayed along with right answers.
POLLEN GRAINS TAKEN ON SEM

1. Which of the following scientists is credited with the invention of the electron microscope and awarded the Nobel Prize for the same?
J.J. Thompson
Ernst Ruska
Louise de Broglie
Otto van Borris
2. Why are thin sections of specimens necessary in Transmission Electron Microscope (TEM)?
Electrons are negatively charged
Electrons have a wave nature
Electrons have no mass
Electrons have a poor penetrating power
3. Osmium tetra oxide is used in electron microscopy as a
Precipitator
Mordant
Staining agent
Fixing agent
4. Which instrument is more useful to study the surface details of a specimen?
Phase contrast Microscope
Scanning Electron Microscope (SEM)
Light Microscope
Transition Electron Microscope(TEM)
5. All of the following are true for both Transition Electron Microscope(TEM) and Scanning Electron Microscope(SEM) except
The illuminating source is an electron beam
The microscope is focused using electromagnetic
Can be used to view specimens smaller than 0.2 micrometers
The specimen must be sectioned prior to viewing
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Read more: SEM vs TEM
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