Which is correct

English as a Second Language English Vocabulary, Grammar and Idioms
1

Will the job be completed by this quarter?
Will the job be completed this quarter?
Will the job be completed by this quarter-end?

Is there any differences between the 3 sentences?

Also do we put a ‘s’ behind a noun following after “any” and “no” respectively? Eg any apples or any apple? No apple or no apples?

2

They’re all almost identical, especially #1 and #3, where a suggested deadline (by the end of the quarter) is reinforced in the question.

Nouns following ‘any’ can be either plural or singular. ‘Any apples’ and ‘Any apple’ are both fine, depending on what you’re expecting; just one apple, or a few.

Nouns following ‘no’ should always be singular. ‘No apple’ is correct.

3

I suppose the following question -
“Is there any differences between the 3 sentences?”
must be
“Are there any differences between the 3 sentences?”.
Am I not correct?
Er.S.M.M.Hanifa

4

Yes, you are correct.