Hi Krishna,

You can follow these tips for the preparation of Tancet exam.

• Have a routine timetable and follow it religiously.
• Practice with past question papers.
• Make notes on important topics.
• Join Mock test to analyze your preparation
• Do practice as much as you can.

Regarding the past year papers are concerned, you can check on the following links.

https://www.vidyarthiplus.com/vp/thread-26216.html#.WyJTyKczbIU

http://www.oldquestionpapers.net/2011/11/tancet-leather-technology-question-paper-sample-model-paper.html

Hope it helps.

Good Luck!