Section 31 - Confession otherwise relevant not to become irrelevant because of promise of secrecy, etc.

If a confession is otherwise relevant, it does not become irrelevant merely because it was made under a promise of secrecy, or in consequence of a deception practised on the defendant for the purpose of obtaining it, or when he was drunk, or because it was made in answer to questions which he need not have answered, whatever may have been the form of these questions or because he was not warned that he was not bound to make such statement and that evidence of it might be given.