What were some indian achievements in astronomy?

Theres only one thing that I know ... As time progressed, Indian astronomy became more scientific and less spiritual! hope this helps!

Accumulating more land so that your country can continue expanding without running into problems such as overpopulation

Ifound the exercise on the internet. attached is the list mentioned above.in order for a compound to be considered optically active it can't have any axis or plan of symmetry. the molecule  shouldn't also  be superimposable on its mirror image.with such considerations, the compounds that are optically active are: -third compound on the first image is optically active; -second and third compound from the second image are optically actives.