@Pooja
Just check the link out( reply from CHC)
http://www.canadavisa.com/canada-immigration-discussion-board/information-regarding-transcript-requirements-t30603.0.html
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Dear Sir/Madam,
This is in response to your recent email enquiry to the Immigration Section of the Canadian High Commission in New Delhi.
The sealed transcripts must originate from and bear the seal of the educational institution which originally issued the transcripts. If the college, affiliated with the university, is the original issuer of the transcripts, you may submit the transcripts sealed by the college. If not, then you must obtain sealed transcripts from the university.
Universities in India are familiar with our requirements and have not, to date, refused to issue sealed transcripts. If you are unable to obtain sealed transcripts, you may submit notarized transcripts however, they will be subject to close scrutiny and the visa officer may still require sealed transcripts.
We trust that this information will be of assistance.