No. Him and me is correct.
All it needs is a question mark. Have you had lunch? That is grammatically correct.
yes
It is grammatically correct, but not good English because things cannot be in despair. Use "desperate."
No not at all
Short answer : Yes and not impolite at all, as suggested below. This is to be handled by you grammatically correct? requires inverted commas to be correct. It should be written as: "Is this sentence "This is to be handled by you." grammatically correct?" The sentence is correct but not very polite; it would be simpler to say "You are to handle this"
"Not like that" can be grammatically correct, depending on the context.
It certainly can be correct. As with all grammar it depends on how it is used
It can be, but not all the time.
Only in the south.
Yes, Almighty God is grammatically correct.
The sentence: "He concurs this book is good." is not grammatically correct. Alternatives include "He concurs; this book is good." or "He concurs that this book is good." A sentence cannot have two verb-subject pairs without some kind of conjunction.