1) please check the stamp duty act of your state for stamp value on the agreement . every state has its own stamp act .
2) agreement can be for 11 months or more . it need not be only for 11 months
3) for clauses in leave and licence agreement your lawyer will guide you and protect your interests
4) in case of sale deed, gift deed etc necessary to have 2 witnesses .
4) licensor will keep the original . certified copy will be handed to you .
5) yes on expiry licensor can ask licencee to vacate the premises .
6)every state has its own rent act .
7)hike to be imposed in case of leave and licence agreement is determined by contract between parties .
8)as per stamp act of your state