[Grammar] good understanding in/of chemical theories, academic background in/of chemistry

[uktous]

Hi,

Question:
Which sentence is correct?
Should I use in or of?

Question1:
I have a good understanding in/of chemical theories and excellent scientific sense, so I am confident that I am able to understand and apply other chemical theories.

Question2:
I have a solid academic background in/of chemistry, so I am confident that I am able to understand and apply other chemical theories.

Thanks

 

[tedtmc]

Question1:
I have a good understanding [STRIKE]in/[/STRIKE]of chemical theories and an excellent scientific sense, so I am confident that I am able to understand and apply other chemical theories. apply my knowledge to new areas/situations.Question2:
I have a solid academic background in[STRIKE]/of [/STRIKE]chemistry, so I am confident that I am able to understand and apply other chemical theories.

What are 'other chemical theories'?

 

[uktous]

Hi,

I want to tell the interviewer that I understand a lot of chemical theories (theories related to chemical), so I am able to understand other chemical theories. After I understand them, I am able to apply them.


Suppose:
There are 10 chemical theories only.

I understand 7 of them.
So I think I am able to understand other 3 theories.

Thanks