I don't think so, Anjuman.
Mr. India was released in 1987. Assuming the movie took two years to make, so the movie shooting started somewhere in early 1985. The little girl you are referring to must have been about 5-7 years of age at the time the movie was made.
Preity Zinta is 30 years old (her 30th birthday was in Jan 2004). So, her birth year would be 1974. In 1985, she would have been 11 years old. I don't think that little girl looked eleven years old.
Also, Preity Zinta started off with ads first. The first ad she appeared in was the 'Liril' (soap) Ad.
