Going over my work before I have to submit. I have one doubt before I do it.

The sentence is---
If you hurry you will be able to keep your appointment.
I say two independent clauses with no comma, but If you hurry sounds like an order ofexpression to set outside. Am I right to say no comma.

Yes you are correct.

No!

"If you hurry" is a dependent clause, not an independent one.

There needs to be a comma after it, before the main (independent) clause.

See #3 here:

http://grammar.ccc.commnet.edu/grammar/commas.htm

Your analysis is correct. In this case, "If you hurry" is indeed a dependent clause and should not be separated by a comma from the independent clause "you will be able to keep your appointment." When a dependent clause comes before the independent clause, as in this sentence, no comma is needed.

To explain further, the clause "If you hurry" introduces a condition or hypothetical situation, making it a dependent clause. It relies on the independent clause "you will be able to keep your appointment" to make complete sense. Since the two clauses are closely connected and form a cause-and-effect relationship, they don't require a comma to separate them.

Remember, the use of commas depends on the specific grammar rules and the intended meaning of the sentence. In this case, omitting the comma is the correct choice.