Multi Class 

Yes

Yes- applicant can claim priority of up to 6 months as per the convention

addition

1. Name and address of the applicant(s). 
2. A clear specimen of the mark (preferably a soft copy in JPEG format).
3. The specification of the goods and/or services, and if possible, the class(es) in which the mark is to be filed.
4. Any claims for color, 3-dimensional shape or aspect of packaging.
5. If the mark is a device (logo), a description of the device.
6. If the mark is or contains a word, the derivation of the word.
7. If the mark is or contains a word in a language other than English, a certified translation and transliteration of the same.

2 months from the date of publication.  (extendable) 

10  years from the date of filing. 

Power of Attorney simply signed. 

None due

N/A

A mark becomes vulnerable to an action for cancellation if it not been used in the preceding 5 years