Question

Which among the following characters make graphite a good moderator?

• A. Cross-sectional area of graphite is very high
• B. Graphite is a good conductor of electricity
• C. There is elastic collision between graphite and neutron
• D. Graphite has weak van der Waals' force between two layers

Answer 1

Answer: (A), (C)

The correct options are
A Cross-sectional area of graphite is very high
C There is elastic collision between graphite and neutron

Graphite has a high surface area and performs elastic collisions to nuclei making it an excellent moderator.