Auditors appointment

Hi Fellow CA's.

Few queries:-

1. In what time ADT 1 need to file by a Chartered Accountant for his appintment to ROC. Erstwhile, 23 B need to file with 30 days of receipt.

2. IF a Company got incorporated in Jan 2014, when Companies Act 2013 will be applicable, or we need to audit the financials for 15 months period? or we need to audit Jan to March 2014 and then April2014 till Mar 2015.

Thanks in advance.