If U ever had Indian passport and u Acquire another citizenship and u don't renounce your Indian citizenship,They Charge the following penalties :
so its better to renounce the Indian Citizenship ASAP u get the Canadian.
They Will know that you have not cancelled the Indian passport because earlier when ever you want to apply for Indian Visa for first time, they ask you your First Indian passport on which you landed and Last Indian Passport held & now may be surrender certificate. ( not sure I got OCI )
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The Mission/Consulate would levy penalty if the Indian passport has not been cancelled for more than 3 years, or if it was utilized to visit India or any other consular service was obtained after acquiring foreign nationality. The penalty would be in addition to the Renunciation Fee. Contact your nearest Mission/Consulate or BLS International Services Canada Inc. Centres to find out the exact amount of penalty. Following are the provisions relating to penalty:
(A) Penalty for retention of Indian Passport after acquiring Canadian citizenship for a period in excess of three years from the date of acquiring Canadian citizenship
(a) if your Passport expired on or before 31 Dec, 2004 – no penalty
(b) if your Passport expired on or after 1 Jan, 2005 – C$ 180
[Kindly Note: Retention Penalty (C$180) is different from Renunciation Fee (C$ 126). The latter needs to be paid by those who acquire foreign nationality on or after 1 June, 2010.]
(B) Penalty for traveling on Indian Passport after acquiring Canadian citizenship is C$ 180 for each time, subject to a maximum of C$ 900
(C) Penalty for getting Indian Passport Renewed or Reissued after acquiring Canadian citizenship is C$ 450 for each such renewal or reissue.
(D) Penalty for obtaining any miscellaneous passport service (name change/correction etc.) on Indian Passport after acquiring Canadian citizenship is C$ 180 for each such service.