punctuating adverbial conjunction, adjective conjunction

[sharanbr]

The books I have refered on punctuations mention that if the phrase with a subordinating adverbial conjunctions (e.g. although) comes first then a comma is required and no comma otherwise.
What about adjective conjunctions. I have seen sentences which contain commas even when these come at the end of main clause
e.g.
They say he is honest, which is far from truth

Regards

[Anglika]

You might like to look at this for comma use: Using Commas

[sharanbr]

I dont think I got an answer to my question. The link talks about adverbial conjunction, not much about adjective conjunctions. However, it talks about adjective conjunctions only in the context of setting of clauses within main clause ...

Regards

[naomimalan]

The books I have refered on punctuations mention that if the phrase with a subordinating adverbial conjunctions (e.g. although) comes first then a comma is required and no comma otherwise.
What about adjective conjunctions. I have seen sentences which contain commas even when these come at the end of main clause
e.g.
They say he is honest, which is far from truth

Regards

In fact, your question isn't very clear. What exactly do you mean by an adjective conjunction? The word 'which'? I have never heard it called an adjective conjunction. The traditional name for this word in this context is 'relative pronoun'.
In the sentence you quote it introduces a relative clause which refers to the whole of the previous clause (They say he is honest) and which is called a sentence relative. As such, yes, it must come after the main clause and should be preceded by a comma.

[sharanbr]

I agree that my question was incorrect.

Let me rephrase it again.

My question was regarding relative adjectives e.g. which that what whichever
When these clauses follow main clause, is there a need for comma punctuation.

Regards

[Anglika]

I agree that my question was incorrect.

Let me rephrase it again.

My question was regarding relative adjectives e.g. which that what whichever
When these clauses follow main clause, is there a need for comma punctuation.

Regards

which is usually preceded by a comma when it introduces a sub-clause providing additional information: My clothes, which are all made of silk, are hanging in the cupboard.
that, what and whichever are not.

These are things that are in discussion
There is no saying what he will do
The driver took whichever road to the right he could.