Sandy,
They will assess according to d health booklet under '9 to 12 months development assessment' so actually for those u can do it yourself at home as well. But for hearing test they will have that device which release high n low frequency pitches, n also use a torchlight to test her eye movement. The rest nothing much, ask u what are d sounds she can make n whether she can clap hand, wave bye bye lor. But she didnt check or ask if she can crawl, only see how stable she can sit, stand with support etc