It could be a Sapindaceae plant.

Please check Acronychia pedunculata (L.) Miq. (Rutaceae)

Dear Rashid, Aravind and Kaliyamurthy

Here also I think there are two plants. What we see in  picture 2, 3, 4, 5 and 6  may be Achronychia pedunculata. Rashid can confirm it with the very characteristic smell of the plant.

But what we see in picture 1, 7 and 8 is something else.  I think it is Dichapetalum gelonioides (Dichapetalaceae)

Yes, This tree is Acronychia pedunculata (L.) Miq. (Rutaceae) (Photos 2 to 7). but photos 1, 7 & 8   might be Dichapetalum gelonioides.