Meaning of slap

[Mito Komon]

Synonym Search, Intermediate level

ESL/EFL Test #113 "Synonyms for beat", question 5

I've ......... my hand against the door two times already.

(a) beaten
(b) slapped
(c) slammed
(d) hit

Synonym Search, Intermediate level

ESL/EFL Test #113 "Synonyms for beat", answer 5

I've hit my hand against the door two times already.

Correct answer: (d) hit

Your answer was: incorrect
I've slapped my hand against the door two times already.
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Hello,

I wonder why "slap" is not suitable about this answer.

Thank you in advance for you reply
Mito Komon

[Baubau]

Hello,

Is there any difference between hit and slammed in "I've hit my head on the door two times already"? Does hit imply a passivity which slammed doesn't?

Thanks in advance.